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DO88
DO88 for Porsche
TDO88 are a Swedish performance engine parts company est. 2007 specialising in the development of intercoolers, silicone hose kits, alloy radiators and more.Based in Nykvarn Sweden, DO88 offer uprated intercoolers as well as other products for a Porsche, VW and Audi.All DO88 products are designed and tested 'in house', with the object of achieving the maximum available performance and quality. When tested directly against other brands, DO88 products excel in terms of performance, without compromise, as well as offering great value for money! Also the company has its own tuning product line.
A Quick Look at DO88
DO88 information on this page is based on details supplied by the manufacturer or distributor, plus any OE references provided with the parts.
Choosing the Right Fit for Your Porsche
Where DO88 is listed for Porsche, use the supplied model coverage and OE references to confirm suitability. Check details that commonly affect fitment such as model year, side/position, and connector type where relevant.
- Typical reasons to choose these parts include reducing heat soak, improving charge-air/coolant temperature control, and replacing tired boost or intake hoses that have started to split or leak.
- Common symptoms pointing to intake or boost issues include boost leaks, split hoses, oily residue at joints, reduced power under heat, inconsistent throttle response, and higher intake temperatures that can feel like “turbo problems”.
- Before upgrading or diagnosing issues, pressure-test the intake/boost system for leaks and replace any weak clamps, couplers, or boots at the same time as new components.
- After installation, monitor live data (where available) for intake temperatures and boost behaviour to confirm that the system is sealing correctly and performing as expected.
Browse by Category
If you already know the area you are working on, start with the category and then filter by Porsche model. Where real-world symptoms and typical reasons to replace are provided, use them to keep the wording grounded.
Engine Rebuild Parts — Engine rebuild parts are typically changed during a planned rebuild or when symptoms point to wear inside the engine, such as loss of compression, excessive oil use, persistent leaks, abnormal noises, or contamination found during inspection. Owners and specialists often renew these parts while the engine is apart because labour is the big cost, so refreshing bearings, chains, guides, seals, fasteners, and gaskets at the same time reduces the risk of repeat strip-downs and improves reliability after the rebuild.
- Before committing to a rebuild, carry out compression and leak-down tests, inspect bores with a scope, and check the oil/filter for debris so you understand the true condition of the engine.
- Plan to replace hard-to-access chains, guides, seals, and fasteners “while you are in there” so the engine does not need to be opened again for preventable wear items.
Oil System Parts — Oil system parts are changed to restore correct oil pressure and flow, stop leaks, and protect the engine from lubrication failure. Owners and specialists often renew oil lines, seals, fittings, and related valves during major service or rebuilds because ageing rubber, hardened seals, and corroded fittings are a frequent source of leaks and pressure issues.
- If you see oil pressure warnings, stop the engine, verify the oil level/condition, and confirm readings with a mechanical gauge before continued driving.
- When chasing leaks, many owners replace groups of lines, seals, and related hardware together to avoid multiple strip-downs and to stabilise the system.
Oil Pipes & Hoses — Oil pipes and hoses are changed to stop leaks, restore safe oil flow, and prevent sudden hose failure that can dump oil quickly. Owners often renew them when rubber sections harden, fittings corrode, or lines have been disturbed during other work, because old hoses can start leaking soon after being moved.
Air Intake & Injection — Intake and injection components are replaced when the engine is running lean or rich, idling poorly, hesitating, or showing fault codes linked to airflow measurement, vacuum leaks, or injector performance. Over time, rubber boots split, vacuum lines harden, clamps loosen, and sensors drift, and people also change intake parts during upgrades or when restoring correct drivability after intermittent running issues.
- A smoke test is one of the quickest ways to find intake leaks; follow up by visually inspecting boots, hoses, and clamps.
- Even small vacuum leaks can cause significant drivability issues at idle and low load, so fix minor leaks rather than ignoring them.
Hoses / Pipes / Sleeves — Hoses and sleeves are replaced when they leak, sweat, crack, swell, or become brittle from heat and oil exposure. Ageing hoses can fail suddenly, leading to coolant loss, overheating, or oil leaks, so many Porsche owners change multiple hoses proactively during cooling or oiling system refreshes to restore correct pressure retention and reduce breakdown risk.
- When fitting new hoses, consider renewing clamps at the same time, as tired clamps can damage fresh hoses or fail to hold correct tension.
- After work on cooling or oil systems, clean the area and recheck for fresh seepage after a few heat cycles to confirm everything is sealing properly.
Explore DO88 at Design911
View the current DO88 range for Porsche at Design911, then filter by model and category to narrow down to the right parts.

To Fit:
Porsche 997.1 Turbo models 2007-2009
At the beginning of the development process of this product we spent a lot of time thinking what would be the preferred way to build a Y-pipe; here is the result of our conclusions and development process!
Significant advantages with Do88's Y-pipe compared to the OEM pipe:
• Much larger inner diameter for improved air flow, do88 62% higher!
• 70mm mandrel bent aluminium pipes.
• Smooth flow cast collector part.
• Smooth internal surface for best air flow.
• Comes with high quality silicone hoses and accessories for installation.
• See enlarged images for more information!
Our pipe has both a very good flow rate and a low weight which is achieved by combining mandrel bent lightweight pipes with a high quality 3D freeform designed cast joint between them. Onto the cast part we then welded CNC-machined connections for bov and breather hoses.This construction adds a lot of performance but only small amount of extra weight. Do88 Performance Y-pipe weight 1,52 kg (3,35 lb) OEM plastic pipe weight 1,38 kg (3,04 lb) and a competitors cast performance pipe weight 2,76kg (6,08 lb)!
The pipes are then finished in a high quality powder coat that makes them look as good as they perform! You can choose between the more discrete semi gloss black and a fresh silver metallic finish.
The kit also includes 2 high quality custom designed silicone hoses which are available in two different versions. Which version you need depends on if you will install the Y-pipe together with the OEM intercoolers or the do88 performance intercoolers.
When it comes to air flow performance our do88 Y-pipe totally outperforms the OEM Y-pipe by 62% increased flow at the same pressure drop! On our final tests of this Y-pipe together with our intercoolers on a Stage 1 tuned 997.2 Turbo PDK we measured a great performance increase. In all tests the car was driven in Sport Plus, automatic gear change and AC off. From our five in a row full throttle accelerations between 40-270 km/h (25-168 mph) we have very accurate and consistent test data for the range 50-250 km/h (31-155 mph). When analyzing the numbers, we found that we cut down the acceleration time for 50-250 km/h (31-155 mph) by 3 seconds!
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Extreme High Flow Performance Y-Pipe
To Fit: Porsche 911 (997.1 Turbo ) models 2007-2009
At the beginning of the development process of this product we spent a lot of time thinking what would be the preferred way to build a Y-pipe; here is the result of our conclusions and development process!
Significant advantages with Do88's Y-pipe compared to the OEM pipe:
• Much larger inner diameter for improved air flow, do88 62% higher!
• 70mm mandrel bent aluminium pipes.
• Smooth flow cast collector part.
• Smooth internal surface for best air flow.
• Comes with high quality silicone hoses and accessories for installation.
• See enlarged images for more information!
Our pipe has both a very good flow rate and a low weight which is achieved by combining mandrel bent lightweight pipes with a high quality 3D freeform designed cast joint between them. Onto the cast part we then welded CNC-machined connections for bov and breather hoses.This construction adds a lot of performance but only small amount of extra weight. Do88 Performance Y-pipe weight 1,52 kg (3,35 lb) OEM plastic pipe weight 1,38 kg (3,04 lb) and a competitors cast performance pipe weight 2,76kg (6,08 lb)!
The pipes are then finished in a high quality powder coat that makes them look as good as they perform! You can choose between the more discrete semi gloss black and a fresh silver metallic finish.
The kit also includes 2 high quality custom designed silicone hoses which are available in two different versions. Which version you need depends on if you will install the Y-pipe together with the OEM intercoolers or the do88 performance intercoolers.
When it comes to air flow performance our do88 Y-pipe totally outperforms the OEM Y-pipe by 62% increased flow at the same pressure drop! On our final tests of this Y-pipe together with our intercoolers on a Stage 1 tuned 997.2 Turbo PDK we measured a great performance increase. In all tests the car was driven in Sport Plus, automatic gear change and AC off. From our five in a row full throttle accelerations between 40-270 km/h (25-168 mph) we have very accurate and consistent test data for the range 50-250 km/h (31-155 mph). When analyzing the numbers, we found that we cut down the acceleration time for 50-250 km/h (31-155 mph) by 3 seconds!
Included parts in this kit:
• Full aluminium performance Y-pipe
• Silicone hoses
• Hose clamps
• Hose adaptors if the Y-pipe will be installed together with OEM intercoolers
- Porsche 997 MK1 TURBO 2007-09

To Fit:
Porsche 911 (996 Turbo), GT2 manual and auto 1999 to 2005
Significant advantages with do88's Porsche Performance Intercoolers & Silicone Hoses:
• Equivalent OEM numbers, 997.110.639.00, 997.110.640.00 (ref only)
• Core Volume: 6825 cm³ (4821 cm³), do88 41% larger!
• Lower post Intercooler Air Temperature at same conditions: OEM 50°C (122°F), do88 34°C (93°F)
• See enlarged images for test data results!
These Intercoolers are constructed to deliver the best cooling efficiency during tough conditions. Exclusively manufactured in aluminium with continuous welds, they guarantees reliability and endurance when you really need it. The increased core volume improves cooling efficiency and lowers the intake air temperature. Do88 have undergone thorough testing under severe and continuous conditions to ensure the absolute best performance! These Intercoolers are immensely optimized to allow the maximum core size in the given space without compromising on easy drop-in-fitment. This is the undoubted choice for the inspired enthusiast or the race car driver demanding reliability at the limit.
This package is supplied with everything you need for fitment, including Silicone Hoses, Screws, Brackets and Clamps.
The Boost Pressure Hoses included in this Kit are Silicone reinforced 4 ply polyester fabric for optimum airflow, performance and reliability!
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
ICM-200-996
The product you are viewing cross references to these numbers
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
To Fit:
Porsche 996 1999-2004 Carrera, Targa
Porsche 997.1 2005-2008 Carrera 2S, Carrera 4S
Kit of 3 clamps
The kit contains all necessary hose clamps to install the specified hose kit. The included clamps are a high quality standard design type in all stainless steel (W4 class) with a stamped band to minimize impact on hose surface.
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08

To fits:
Porsche 996 Carrera / Carrera 4 1999-01
Porsche 996 Carrera 4 / Carrera 4S / Targa 2001-04 *Only fits cars with manual gearbox
Porsche 997.1 Carrera 2S / Carrera 4S 2005-08
These hoses are entirely manufactured in high quality silicone for best finish and durability. With an integrated steel wire to prevent the hose from collapsing under negative pressure and three to five layers of reinforcement, depending of the inner diameter and position.
The original hoses are manufactured in rubber that not seldom cracks from age. This is a durable solution for you that in addition improves the looks!
Available in a choice of black, blue or red finish.
Equivalent Porsche part numbers 99611022157, 99711022100, 99711022300 (for cross reference only)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
KIT201
The product you are viewing cross references to these numbers
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08

To fit:
Porsche 968 3.0 236bhp 1992-1995
Kit of 21 clamps:
The kit contains all necessary hose clamps to install the specified hose kit. The included clamps are a high quality standard design type in all stainless steel (W4 class) with a stamped band to minimize impact on hose surface.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
CLAMP-KIT178S
The product you are viewing cross references to these numbers
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95

To fit:
Porsche 968 3.0 (i4) 236bhp 1992-1995
These hoses are entirely manufactured in high quality silicone for best finish and durability. With three to five layers of reinforcement, depending of the inner diameter, the hoses withstand high pressure rates and high temperatures for a long time. The original hoses are manufactured in rubber that often cracks from age.
This is the durable solution for you that in addition improves the appearance!
Hoses Included:
• Upper radiator hose OE Reference: 94410623911
• Lower radiator hose OE Reference: 95110623704
• Radiator bleed hose OE Reference: 95110624901
• Throttle body preheating hose OE Reference: 94410623604
• Other radiator hoses OE Reference: 94410624104
• Other radiator hoses OE Reference: 94410625301
• Heater hose OE Reference: 94457258900
• Heater hose OE Reference: 94457258702
• Expansion tank hose OE Reference: 94410621705
• Expansion tank hose OE Reference: 94410625100
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
DO88-KIT178S
The product you are viewing cross references to these numbers
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95

To Fit:
Porsche 911 (964 Turbo) 3.3 Turbo 1990-1994 Turbo
Kit of 4 clamps
The kit contains all necessary hose clamps to install the specified hose kit. The included clamps are a high quality standard design type in all stainless steel (W4 class) with a stamped band to minimise impact on hose surface.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
CLAMP-KIT160S
The product you are viewing cross references to these numbers
- Porsche 964 (911) TURBO 3.3L 1991-93

To Fit:
Porsche 911 (964 Turbo) 1990-1994 3.3L turbo engines
DO88 hoses are entirely manufactured in high quality silicone for best finish and durability. With three to five layers of reinforcement depending of the inner diameter, the hoses withstand high pressure rates and high temperatures for a long time. The original hoses are manufactured in rubber that often cracks from age. This is a durable solution that in addition improves the looks!
Hoses included:
• Turbo outlet hose Reference: 93011036800
• Turbo inlet hose Reference: 93011025900
All part numbers from the vehicle manufacturer are only stated as reference.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
DO88-KIT160S
The product you are viewing cross references to these numbers
- Porsche 964 (911) TURBO 3.3L 1991-93

To Fit:
Porsche 911 (964 Turbo) 1990-1994 3.3 turbo Engines
Kit of 29 clamps:
The kit contains all necessary hose clamps to install the specified hose kit. The included clamps are a high quality standard design type in all stainless steel (W4 class) with a stamped band to minimise impact on hose surface.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
CLAMP-KIT158
The product you are viewing cross references to these numbers
- Porsche 964 (911) TURBO 3.3L 1991-93

To Fit:
Porsche 911 (964 Turbo) 1990-1994 3.3 turbo Engines
DO88 hoses are entirely manufactured in high quality silicone for best finish and durability. With three to five layers of reinforcement depending of the inner diameter, the hoses withstand high pressure rates and high temperatures for a long time. The original hoses are manufactured in rubber that often cracks from age. This is a durable solution that in addition improves the looks!
These hoses feature an extra flourosilicone layer to make them more oil resistant than normal hoses for better performance!
Hoses included:
• Oil thermostat hose 96420724101, 96420724104, 96420724106
• Oil thermostat hose 96420725102, 96420725103
• Oil tank hose Reference: 96420721700
• Oil tank hose 96420713002, 96420713004
• Oil tank hose 96420724702
• Oil tank hose 96420717700
• Breather hose 93020704301
• Breather hose 93020731400
• Breather hose 93020731600
• Breather hose 93020714503
• Oil tank hose 93010739402, 99923600750, 00004320495
• Breather hose * 93010739703
• Breather hose * 93010739703
• Breather hose * 93020714502
Important information! * The pressed hose clamps needs to be cut on the two original hoses and then the hose connection and the steel pipe must be reused. They are installed on the new silicone hoses with regular hose clamps.
All part numbers from the vehicle manufacturer are only stated as reference.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
DO88-KIT158S
The product you are viewing cross references to these numbers
- Porsche 964 (911) TURBO 3.3L 1991-93
To Fit:
Porsche 911 (964 Turbo) 3.3 Turbo 1990-1994
Kit of 4 clamps
The kit contains all necessary hose clamps to install the specified hose kit. The included clamps are a high quality standard design type in all stainless steel (W4 class) with a stamped band to minimise impact on hose surface.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
CLAMP-KIT159
The product you are viewing cross references to these numbers
- Porsche 964 (911) TURBO 3.3L 1991-93

To Fit:
Porsche 911 (964 Turbo) 1990-1994 3.3L turbo engines
DO88 hoses are entirely manufactured in high quality silicone for best finish and durability. With three to five layers of reinforcement depending of the inner diameter, the hoses withstand high pressure rates and high temperatures for a long time. The original hoses are manufactured in rubber that often cracks from age. This is a durable solution that in addition improves the looks!
Hoses included:
Turbo inlet hose
Reference: 93011038200
Turbo inlet hose
Reference: 70mm / ID 25mm
Manufacturer part numbers are stated for reference only.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
DO88-KIT159S
The product you are viewing cross references to these numbers
- Porsche 964 (911) TURBO 3.3L 1991-93

To Fit:
Porsche 911 (964 Turbo) 3.3 Turbo 1990-1994
Kit of 2 clamps:
The kit contains all necessary hose clamps to install the specified hose kit. The included clamps are a high quality standard design type in all stainless steel (W4 class) with a stamped band to minimise impact on hose surface.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
CLAMP-KIT162S
The product you are viewing cross references to these numbers
- Porsche 964 (911) TURBO 3.3L 1991-93

To Fit:
Porsche 911 (964 Turbo) 1990-1994 3.3L turbo engines
DO88 hoses are entirely manufactured in high quality silicone for best finish and durability. With three to five layers of reinforcement depending of the inner diameter, the hoses withstand high pressure rates and high temperatures for a long time. The original hoses are manufactured in rubber that often cracks from age. This is a durable solution that in addition improves the looks!
Hoses included:
• Power steering hose Reference: 96534744500
All part numbers from the vehicle manufacturer are only stated as reference.
Click 'Zoom in' for large parts diagram.
Diagram ref no 16
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
DO88-KIT162S
The product you are viewing cross references to these numbers
- Porsche 964 (911) TURBO 3.3L 1991-93

To Fit:
Porsche 911 (964 Turbo) 1990-1994 3.3L turbo Engines
The kit contains all necessary hose clamps to install the specified hose kit. The included clamps are a high quality standard design type in all stainless steel (W4 class) with a stamped band to minimise impact on hose surface.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
CLAMP-KIT161S
The product you are viewing cross references to these numbers
- Porsche 964 (911) TURBO 3.3L 1991-93

To Fit:
Porsche 911 (964 Turbo) 1990-1994 3.3L turbo Engines
DO88 hoses are entirely manufactured in high quality silicone for best finish and durability. With three to five layers of reinforcement depending of the inner diameter, the hoses withstand high pressure rates and high temperatures for a long time. The original hoses are manufactured in rubber that often cracks from age. This is a durable solution that in addition improves the looks!
Hoses included:
• Auxiliary air regulator hose Reference: 93011033506, 93060610200
• Auxiliary air regulator hose Reference: 93011033507
• Brake vacuum hose Reference: 93011037001
• Brake vacuum hose Reference: 210mm / ID 15mm
• Vacuum hose Reference: 93011054400
• Vacuum hose Reference: 93011071400
All part numbers from the vehicle manufacturer are only stated as reference.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
DO88-KIT161S
The product you are viewing cross references to these numbers
- Porsche 964 (911) TURBO 3.3L 1991-93