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Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://www.design91.uk/images/schemaLogo.png https://www.design91.uk/images/schemaLogo.png +443456003478 https://www.design91.uk Facebook Instagram

Belts All Types

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DISPLAYING 1 to 14 (of 14 products)
3609001601-AC
Product Information
Product Information
Under drive crankshaft pulley (with A/C) kit. Includes pulley, drive belt and new bolt. Pulley is made from 6061-T6 aluminum, Improve horsepower and torque while reducing parasitic drag from the alternator, power steering pump and water pump.

Pulley outer diameter: 123mm (measured from ribs to ribs)

FITMENT GUIDE:
Porsche 986 Boxster:
1997-1999 2.5L H6
2000-2004 2.7L H6
2000-2004 S 3.2L H6
986 Spec Boxster Legal

Porsche 987 Boxster / Cayman
2005- 2.7L H6
2005-2006 3.2L H6
2007- 3.4L H6

Porsche 996 / 997
1999 3.4L H6 NA
2001-2004 3.6L H6 NA
2005- 3.6L H6 NA

Will not work on 3.8L (S) or Turbo models

For INSTALLATION GUIDE CLICK HERE

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3609001601-AC
99610211562
99610511563

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3609001601-NO-AC
Product Information
Product Information
Under drive crankshaft pulley (without A/C) kit. Includes pulley, drive belt and new bolt. Pulley is made from 6061-T6 aluminum, Improve horsepower and torque while reducing parasitic drag from the alternator, power steering pump and water pump.


FITMENT GUIDE:
Porsche 986 Boxster:
1997-1999 2.5L H6
2000-2004 2.7L H6
2000-2004 S 3.2L H6
986 Spec Boxster Legal

Porsche 987 Boxster / Cayman
2005- 2.7L H6
2005-2006 3.2L H6
2007- 3.4L H6

Porsche 996 / 997
1999 3.4L H6 NA
2001-2004 3.6L H6 NA
2005- 3.6L H6 NA

Will not work on 3.8L (S) or Turbo models

For INSTALLATION GUIDE CLICK HERE

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

3609001601-NO-AC
99610211562
99610511563

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Special Order item
99610211856
Product Information
Product Information
Drive belt deflection roller.

porsche

Fits:
Porsche 996 Carrera 3.4L / 3.6L 1997-05 Tiptronic gearbox
Porsche 997.1 Carrera 3.6L 2005-08 Tiptronic gearbox
Porsche 986 Boxster 2.5L 2.7L / 3.2L 1997-04 Manual & Tiptronic gearbox
Porsche 987.1 Boxster 2.7L / 3.2L / 3.4L 2005-08 Tiptronic gearbox
Porsche 987C.1 Cayman 2.7L / 3.4L 2005-08 Tiptronic gearbox

Click 'Zoom in' for large parts diagram.
Diagram ref No 15

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99610211856
99610211856

The product you are viewing cross references to these numbers
Special Offer
99610211856/2
Product Information
Product Information
Drive belt deflection roller.

oematch

Fits:
Porsche 996 Carrera 3.4L / 3.6L 1997-05 Tiptronic gearbox
Porsche 997.1 Carrera 3.6L 2005-08 Tiptronic gearbox
Porsche 986 Boxster 2.5L 2.7L / 3.2L 1997-04 Manual & Tiptronic gearbox
Porsche 987.1 Boxster 2.7L / 3.2L / 3.4L 2005-08 Tiptronic gearbox
Porsche 987C.1 Cayman 2.7L / 3.4L 2005-08 Tiptronic gearbox

Click 'Zoom in' for large parts diagram.
Diagram ref No 15

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Related, superseded, cross reference or alternative numbers for comparison.

99610211856
99610211856
99610211850
99610211852
99610211853
99610211855
99610291853

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Special Order item
99610211958
Product Information
Product Information
Drive belt deflection roller.

porsche

Fits:
Porsche 996 Carrera 3.4L / 3.6L 1997-05 Tiptronic gearbox
Porsche 997.1 Carrera 3.6L 2005-08 Tiptronic gearbox
Porsche 986 Boxster 2.5L / 2.7L / 3.2L 1997-04 Manual & Tiptronic gearbox
Porsche 987.1 Boxster 2.7L / 3.2L /3.4L 2005-08 Tiptronic gearbox
Porsche 987C.1 Cayman 2.7L / 3.4L 2005-08 Tiptronic

Click 'Zoom in' for large parts diagram.
Diagram ref No 12

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99610211958
99610211958
99610211957

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Special Offer
99610211958/1
Product Information
Product Information
Drive belt deflection roller.
Also referred to as a relay roller or deflection roller, responsible for guiding and maintaining proper routing and tension of the accessory drive belt system.

Fits:
Porsche 996 Carrera 3.4L / 3.6L 1997 - 2005 Tiptronic gearbox
Porsche 997.1 Carrera 3.6L 2005 - 2008 Tiptronic gearbox
Porsche 986 Boxster 2.5L / 2.7L / 3.2L 1997 - 2004 Manual & Tiptronic gearbox
Porsche 987.1 Boxster 2.7L / 3.2L /3.4L 2005 - 2008 Tiptronic gearbox
Porsche 987C.1 Cayman 2.7L / 3.4L 2005 - 2008 Tiptronic

Diagram ref No 12

The idler pulley supports the accessory drive belt, helping to:
•  Maintain proper belt routing and tension, preventing slipping and reducing premature wear.
  Guide the belt around engine accessories such as the alternator, power steering pump, A/C compressor, and water pump.
  Ensure smooth operation of components driven by the belt for optimal engine performance.
If the idler pulley wears out or the bearing fails, you may hear squealing, chirping, or grinding noises, see uneven belt wear, or experience belt misalignment - indicators it’s time for replacement.

A worn or failing idler pulley can cause the drive belt to slip, misalign, or break, which can in turn disrupt power to critical engine accessories. Symptoms include belt noise, squealing, or loss of accessory function (e.g., A/C, alternator charging), potentially leading to more costly repairs if ignored. Replacing it with an OE Match pulley ensures proper belt tension and routing, helping keep your engine’s accessory systems functioning smoothly.

Replace the idler pulley if you notice any of the following:
  Squealing, chirping, or grinding noises from the belt area
  Visible belt misalignment or excessive wear
•  Pulley bearing play or rough rotation to the touch
  Cracks or deterioration of the pulley surface

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99610211958
99610211952
99610211954
99610211955
99610211957
99610211958
99610291955

The product you are viewing cross references to these numbers
Special Order item
99610211757
Product Information
Product Information
Drive belt tensioning roller.

porsche

Fits:

Porsche 986 Boxster 2.7L / 3.2L / 3.4L Manual or Tiptronic gearbox
Porsche 996 Carrera 3.4L / 3.6L 1997-05 Tiptronic gearbox
Porsche 997.1 Carrera 3.6L 2005-08 Tiptronic gearbox
Porsche 987.1 Boxster 2.7L / 3.2L / 3.4L 2005-08 Tiptronic gearbox
Porsche 987C.1 Cayman 2.7L / 3.4L 2005-08 Tiptronic gearbox

Click 'Zoom in' for the large parts diagram.
Diagram ref No 8



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99610211757
99610211757

The product you are viewing cross references to these numbers
Special Offer
99610211757/1
Product Information
Product Information
Drive belt tensioning roller.

oematch

Fits:

Porsche 986 Boxster 2.7L / 3.2L / 3.4L Manual or Tiptronic gearbox
Porsche 996 Carrera 3.4L / 3.6L 1997-05 Tiptronic gearbox
Porsche 997.1 Carrera 3.6L 2005-08 Tiptronic gearbox
Porsche 987.1 Boxster 2.7L / 3.2L / 3.4L 2005-08 Tiptronic gearbox
Porsche 987C.1 Cayman 2.7L / 3.4L 2005-08 Tiptronic gearbox

Click 'Zoom in' for the large parts diagram.
Diagram ref No 8



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99610211757
99610211757
99610211750
99610211751
99610211753
99610211754
99610211756
99610291754

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Special Offer
3609001601
Product Information
Product Information
rohler

Lightweight Under drive Pulley is made from 6061-T6 aluminium. Offers improved HP & TQ by reducing drag from the power steering pump, A/C, water pump and alternator.

Pulley outer diameter: 123mm (measured from ribs to ribs)

Increase your engine output by reducing the draw of the engine's ancillaries ie the power steering pump, Air Conditioning, water pump and alternator by slowing them down and reducing the horsepower they use.

Underdrive pulley is one of the cheapest returns for the money spent when it comes to actual performance and horsepower gains for track and street use cars.

Installation tool (wrench) included, new OEM crankshaft pulley bolt is recommended but not included with this product.

Note: In order to accommodate the smaller diameter pulley, the timing boss on the engine case must be shortened using die grinder or similar tool (see link for instructions below).

Replacement Pulley for Original Porsche parts No. 99610211563

Fits:
Porsche 996 3.4L
Porsche 996 3.6L
Porsche 997 3.6L
Porsche Boxster 986
Porsche Boxster 987
Porsche Cayman 987C

**Please note you will need a new shorter Pully Belt which you can purchase from us.
99610215199/1
Under drive pulley w/ air conditioning - 2100mm

99610215198/1
Under drive pulley w/o air conditioning - 1905mm

Underderive Pulley Installation Instructions - CLICK HERE



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3609001601
99610211562
99610511563

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99610215168/3
Product Information
Product Information
Drive belt for cars WITH Air con.

oematch

Fits:
Porsche 996 Carrera
Porsche 986 Boxster
Porsche 997 Carrera MKI
Porsche 987 Boxster MKI
Porsche 987C Cayman MKI

Click 'Zoom in' for large parts diagram.
Diagram ref no 27

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99610215168
99610215166
99610215164
99610215168

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Special Order item
99610215168
Product Information
Product Information
Drive belt for cars WITH Air con.

porsche

Fits:
Porsche 996 Carrera
Porsche 986 Boxster
Porsche 997 Carrera MKI
Porsche 987 Boxster MKI
Porsche 987C Cayman MKI

Click 'Zoom in' for large parts diagram.
Diagram ref no 27

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99610215168
99610215166
99610215164
99610215168

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Special Offer
99610215168/2
Product Information
Product Information
Drive belt for cars WITH Air con.

meyle

Fits:
Porsche 996 Carrera
Porsche 986 Boxster
Porsche 997 Carrera MKI
Porsche 987 Boxster MKI
Porsche 987C Cayman MKI

Click 'Zoom in' for large parts diagram.
Diagram ref no 27

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99610215168
99610215166
99610215164
99610215168

The product you are viewing cross references to these numbers
Special Order item
99610215167
Product Information
Product Information
Drive Belt for cars WITHOUT Air con

Fits:
Porsche 996 Carrera
Porsche 986 Boxster

Diagram ref no 27

Related reference numbers
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99610215167
99610215165
99610215167

The product you are viewing cross references to these numbers
Special Offer
99610215167/1
Product Information
Product Information
Drive belt for cars WITHOUT Air con

Fits:
Porsche 996 Carrera
Porsche 986 Boxster

Diagram ref no 27

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Related, superseded, cross reference or alternative numbers for comparison.

99610215167
0500061930
99610215165
99610215167

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DISPLAYING 1 to 14 (of 14 products)
Also found on these pages
About Belts All Types

Belts – all types for alternator, fan, power steering and more

At Design911, we supply a wide range of engine and accessory drive belts for Porsche models, covering alternator, cooling fan, power steering and other auxiliary systems, plus related tensioners and pulleys. Whether you are carrying out routine maintenance or refreshing a higher‑mileage engine bay, you can choose from Genuine-style and carefully selected aftermarket options to suit how you use your Porsche.

Why do Porsche belts matter?

Belts are critical to how reliably your Porsche runs from day to day. They transfer drive from the crankshaft to key ancillaries such as the alternator, power steering pump and cooling fan, and in some applications form part of the engine’s timing system. Over time, heat, mileage, contamination and simple ageing can cause cracking, glazing, stretch or noise, while bearings in tensioners and idlers can wear. Replacing tired belts and related components with correctly specified parts helps keep your Porsche dependable, avoids inconvenience from belt slip or failure and supports the long‑term health of driven accessories.

  • Keep your Porsche running smoothly by maintaining drive to essential ancillaries
  • Help protect engine and charging systems where correct belt drive is required
  • Reduce niggles such as squealing, chirping, belt dust or visible cracking
  • Support long‑term enjoyment, pride of ownership and potential resale value with evidence of proper maintenance

Common options & kits

Individual replacement parts

Specific belts, tensioners, idlers or pulleys to address a particular drive run without changing everything at once. This is ideal when you are solving a localised issue or following a service schedule item on a particular belt.

  • Ideal for targeted maintenance or repairs on a single belt circuit
  • Lets you replace only what is required at a given service
  • Helps keep initial outlay under control while still using quality components

Matched sets or pairs

Belts and related parts supplied together so both sides of a system, or closely linked items, are renewed at the same time. This is a sensible approach where access is involved or where you want consistent age and condition across the drive.

  • Consistent behaviour and wear characteristics across the drive system
  • Helps avoid mixing very old and brand‑new parts on the same run
  • Well suited to scheduled maintenance or preparation ahead of long trips

Complete kits

Grouped parts designed to refresh a whole belt system in one go, for example an auxiliary drive kit including belt, tensioner and idlers. These are particularly useful during engine rebuilds or when you want peace of mind that all related items have been changed together.

  • Everything specified for a given belt run in a single matched package
  • Saves time compared with sourcing each component individually
  • Ideal when 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 and supplies many Porsche belt applications as OE or OE‑equivalent parts. Their belts are engineered to closely follow original dimensions and construction, making them a strong choice for routine servicing, higher‑mileage refreshes and rebuild projects where you want Porsche‑specific fitment backed by a global belt specialist.

Gates

Gates develops automotive and heavy‑duty drive system components with a focus on robust construction and consistent running. For Porsche models this typically includes auxiliary drive belts, tensioners and idlers, offering dependable options when you are maintaining or refreshing driven systems used in everyday and demanding conditions.

Kits / package solutions

Design911 also offers curated kit solutions that bundle compatible parts for particular Porsche applications. These can simplify ordering, reduce the chance of missing small but important items, and help ensure the components you fit are intended to work together on your specific model and engine code.

Meyle

Meyle is known for practical replacement parts, often with “HD” variants aimed at durability. While widely associated with suspension and steering, Meyle components are chosen by many Porsche workshops as a value‑conscious alternative where a robust everyday solution is required.

OE Match

OE Match focuses on parts designed to mirror original equipment specification at a sensible cost. For belt‑related components this makes OE Match a useful option when you want OEM‑equivalent fit and function while keeping ongoing running costs under control on regularly used Porsche models.

When should you review or replace your Porsche belts?

Checking belts and related components regularly helps you spot wear, damage or age‑related deterioration before it affects refinement or leads to more extensive repairs. On a Porsche, this is especially relevant as many belts are exposed to heat, fluid contamination and long service intervals.

  • Existing belts show cracking, frayed edges, glazing (shiny surfaces) or visible splitting
  • You notice squealing, chirping, belt dust or signs of slip, particularly on start‑up or under load
  • Charging, cooling or power steering performance feels inconsistent due to possible belt issues
  • You are already replacing items such as water pump, alternator or tensioner and want fresh belts at the same time
  • The belts are oil or coolant contaminated, or have been in service for an extended interval

If any of these apply, it is a good time to review the belts on your Porsche and replace anything that is past its best so your car stays dependable and enjoyable to drive.

Explore belts with Design911

Browse belts of all types for Porsche at Design911 — from individual auxiliary belts and tensioners to complete drive kits — and find options to suit routine maintenance, preventative refreshes and full engine projects across a wide range of Porsche models.

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