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Dayco
Porsche Dayco
Dayco is a leader in the Original Equipment Market – partnering with global automotive and industrial manufacturers to design, develop and produce a high quality product range for Porsche vehicles. At Design911, we focus this expertise on Porsche-specific belt applications, offering Dayco drive and timing solutions to keep your engine ancillaries and timing systems running smoothly.
Porsche Dayco
Dayco belts for Porsche models are engineered as OE or OE-equivalent components, meaning the dimensions, construction and fitment closely follow the original specification. Whether you are maintaining a road car, refreshing a higher-mileage Porsche or completing an engine rebuild, choosing Dayco allows you to pair Porsche-specific fitment with the manufacturing know‑how of a global belt specialist.
Why do Porsche Dayco belts matter?
Belts are critical in how reliably your Porsche runs from day to day. They transfer drive to key ancillaries and, in timing applications, help keep internal engine components synchronised. Over time, rubber and composite materials naturally age, bearings in associated tensioners and pulleys can wear, and contamination or heat cycles can accelerate deterioration. Renewing tired belts with quality Dayco replacements helps your Porsche feel better cared for and reduces the likelihood of minor drive issues escalating into more disruptive faults.
- Keep your Porsche looking and feeling well maintained rather than neglected
- Help protect engine components where correct belt drive is required for cooling and charging systems
- Reduce minor niggles such as squeaks, belt slip or visible cracking on older parts
- Support long-term enjoyment, pride of ownership and potential resale value by showing evidence of proper maintenance
Common options & kits
Individual replacement parts Specific Dayco belts to address a particular drive or timing run without changing every related component at once.
- Ideal for targeted maintenance or repairs
- Lets you replace only what is required at a given service
- Helps keep initial outlay under control while still using a recognised OE supplier
Matched sets or pairs Belts supplied to suit a specific Porsche engine or accessory drive layout so related items can be renewed together.
- Consistent feel and behaviour across the system
- Helps avoid uneven ageing or mixed-spec parts
- A sensible choice for scheduled maintenance or preparation before long trips
Complete kits Grouped Dayco parts designed to refresh a whole belt system in one go, often used during engine rebuilds or larger services.
- Everything specified in a single matched package
- Saves time compared with sourcing individual components separately
- Ideal when upgrading, overhauling or restoring your Porsche’s engine bay
Brands available in this category
For this category we stock a wide choice of trusted brands for Porsche models. You can also browse and filter by brand on this page to focus on your preferred manufacturers.
Dayco Dayco is a leader in the Original Equipment Market – partnering with global automotive and industrial manufacturers to design, develop and produce a high quality product range for Porsche vehicles.
When should you review or replace your Porsche dayco?
Checking Dayco belt applications regularly helps you spot wear, damage or age-related deterioration before it affects refinement or leads to more expensive repairs later on. Dayco’s own technical information highlights how factors such as heat, mileage and contamination can influence belt condition, so periodic visual inspection and replacement to schedule are important on Porsche models.
- Existing belts show signs of wear such as cracking, glazing, fraying or contamination
- You notice noise such as squealing or chirping from the belt area, especially on start-up
- You are carrying out related work, such as an engine rebuild or water pump replacement, and want fresh belts at the same time
- You want the car to feel smarter and better maintained in everyday use or ahead of sale
If any of these apply, it is a good time to review your Dayco belt applications and replace anything that is past its best so your Porsche stays dependable and enjoyable to drive.
Explore Porsche dayco with Design911
Browse Dayco belt options for Porsche at Design911 — from individual parts to complete kits — and find solutions to suit everyday maintenance, upgrades and full rebuild projects across a wide range of Porsche models.

Fits:
Porsche 928 1987-95
Automatic cars only
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919234750
The product you are viewing cross references to these numbers
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95

Fits:
Porsche 928 1985-95
Cars with manual transmission only
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919226650
The product you are viewing cross references to these numbers
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95

Fits:
Porsche 964 Turbo (965) 1991-93
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919236550
The product you are viewing cross references to these numbers
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93

Fits:
All V6 models
Porsche 955 Cayenne V6 3.2L
Porsche 957 Cayenne V6 3.6L
Porsche 958 Cayenne V6 3.6L
Click 'Zoom in' for large parts diagram.
Diagram ref no 8
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95510293300
The product you are viewing cross references to these numbers
- Porsche 955 Cayenne 3.2L V6 2003-06
- Porsche 957 Cayenne 3.6L 2007-10
- Porsche 958 Cayenne V6 3.6L Petrol 300Hp 2010-17
Number of ribs: 6

Fits:
Porsche 997.2 2009-12
Porsche 997.2 TURBO 3.8L MA1.70 engine
Porsche 987.2 Boxster 2009-12
Porsche 987C.2 Cayman 2009-12
Click 'Zoom in' for large parts diagram.
Diagram ref no 7
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A110221601
The product you are viewing cross references to these numbers
- Porsche Boxster 987 MKII 2.9L 2009-2012
- Porsche Boxster S 987 MKII 3.4L 2009-2012
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII Turbo 2010-13
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Width: 13 mm | Length: 1000 mm

Fits:
Porsche 928 1985-95
Fits cars with power steering.
Click 'Zoom in' for large parts diagram.
Diagram Ref No 20.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919228650
The product you are viewing cross references to these numbers
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Width:21 mm | Length: 720 mm
Number of ribs: 6

Fits:
Porsche 944 1989-91 Cars without air conditioning
Porsche 968 1992-95 Cars without air conditioning
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919229051
The product you are viewing cross references to these numbers
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 Turbo S 3.0L 1993-94
Number of ribs: 5, Length: 1005,0 mm.

Fits:
Porsche 944 1982-85
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919220650
The product you are viewing cross references to these numbers
- Porsche 944 2.5L 8V 1982-87

Fits:
Porsche 964 1990-94
Click 'Zoom in' for large parts diagram.
Diagram Ref No 17.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96414718703
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
Number of Teeth: 121
Width: 18 mm

Fits:
Porsche 924 / 924 Turbo
Click 'Zoom in' for large parts diagram.
Diagram Ref No 7.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
056109119A
The product you are viewing cross references to these numbers
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84