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DISPLAYING 1 to 14 (of 14 products)
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

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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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99610211856
99610211856
99610211850
99610211852
99610211853
99610211855
99610291853

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Special Order item
99710211900
Product Information
Product Information
Drive belt deflection roller.

porsche

Fits:
Porsche 996 Carrera 3.4L / 3.6L 1997-05 6-speed Manual transmission
Porsche 997.1 Carrera 3.6L / 3.8L 2005-08 Manual transmission
Porsche 987.1 Boxster 2.7L / 3.2L / 3.4L 2005-08 Manual transmission
Porsche 987C.1 Cayman 2.7L / 3.4L 2005-08 Manual transmission

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

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99710211900
99710211900
4149031111

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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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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
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99610211958
99610211952
99610211954
99610211955
99610211957
99610211958
99610291955

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Special Order item
99710211800
Product Information
Product Information
Drive belt deflection roller.

porsche

Fits:
Porsche 996 Carrera 3.4L / 3.6L 1997-05 6-speed Manual transmission
Porsche 997.1 Carrera 3.6L / 3.8L 2005-08 Manual transmission
Porsche 987.1 Boxster 2.7L / 3.2L / 3.4L 2005-08 Manual transmission
Porsche 987C.1 Cayman 987C 2.7L / 3.4L 2005-08 Manual transmission

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

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99710211800
99710211800
4149031110

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99710211800/1
Product Information
Product Information
Drive belt deflection roller.
This tensioner (or idler) pulley is designed for Porsche 911 (996/997) and Boxster/Cayman vehicles. It supports the serpentine/drive belt system, ensuring smooth, stable rotation and correct belt alignment. It helps maintain proper tension, reduces noise, and protects engine accessories from excessive stress. Built to original Porsche standards and engineered for precise fitment and durability.

Fits:
Porsche 996 Carrera 3.4L / 3.6L 1997-05 6-speed Manual transmission
Porsche 997.1 Carrera 3.6L / 3.8L 2005-08 Manual transmission
Porsche 987.1 Boxster 2.7L / 3.2L / 3.4L 2005-08 Manual transmission
Porsche 987C.1 Cayman 987C 2.7L / 3.4L 2005-08 Manual transmission

Diagram ref no 15

Ideal replacement when the original pulley shows signs of wear, bearing noise, belt misalignment or visible belt damage - restoring accessory-drive reliability and avoiding secondary damage from belt failure.

The idler pulley plays a critical role in your accessory belt drive, maintaining the correct path and tension of the belt that powers many engine-mounted systems. When the pulley bearing deteriorates, or the surface becomes worn or grooved, the belt can slip, make noise, or even break—potentially causing loss of alternator, AC compressor or power-steering function. By replacing this component proactively with a quality OE-Match unit, you safeguard those systems and maintain proper engine accessory operation.

When and why to replace:
Audible bearing noise or rumble coming from the pulley/belt area.
Visible belt wear, glazing, fraying or mis-tracking across the pulley surface.
Occasional belt slippage or accessory drive belt squeal on start-up or load.
Accessory drive servicing (belt replacement, tensioner replacement) where it makes sense to fit the pulley at the same time.
Higher-mileage vehicle where original pulley may have been in service for many years and bears may be near end-of-life.

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99710211800
99710211800
4149031110

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99710211900/1
Product Information
Product Information
Drive belt deflection roller.
A direct-fit idler/deflection pulley for the auxiliary (serpentine) drive belt. Built to OE geometry, it guides the belt path, stabilises belt tracking, and helps maintain correct wrap on the alternator, A/C compressor and power-steering/water pump pulleys.

Fits:
Porsche 996 Carrera 3.4L / 3.6L 1997-05 6-speed Manual transmission
Porsche 997.1 Carrera 3.6L / 3.8L 2005-08 Manual transmission
Porsche 987.1 Boxster 2.7L / 3.2L / 3.4L 2005-08 Manual transmission
Porsche 987C.1 Cayman 2.7L / 3.4L 2005-08 Manual transmission

Diagram ref No 12

The deflection roller maintains smooth, stable tension in the auxiliary belt system. It helps guide the belt precisely over pulleys, reduces vibration, and ensures efficient power delivery to engine accessories such as the alternator, A/C compressor, and power steering pump. Built with OE-spec bearings, it delivers quiet operation and long-lasting reliability under high-speed, high-load conditions.

Over time, the bearing inside the roller can wear, dry out, or seize due to constant load and heat exposure. A failing roller may cause belt noise, vibration, or premature belt wear, potentially leading to accessory drive failure.

Replace the deflection roller when:
You hear squeaking, chirping, or grinding from the belt area
The pulley feels rough or loose when rotated by hand
During belt or tensioner replacement as preventive maintenance
There are signs of belt misalignment or edge fraying

Installing a new deflection roller ensures correct belt tracking, quiet performance, and dependable accessory drive operation.

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99710211900
99710211900

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Special Order item
99710211700
Product Information
Product Information
Drive belt tensioning roller.

porsche

Fits:
Porsche 996 Carrera 3.4L / 3.6L 6-speed Manual transmission
Porsche 997.1 Carrera 3.6L / 3.8L 6-speed Manual transmission
Porsche 987.1 Boxster 2.7L / 3.2L /3.4L 2004-08 Manual transmission
Porsche 987C.1 Cayman 2.7L / 3.4L 2005-08 Manual transmission

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

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99710211700
99710211700

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99710211700/1
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The Drive Belt Tensioning Roller, identified by part number 997.102.117.00, is a critical component in the accessory drive system of several Porsche models, including the 996, 987 (Boxster and Cayman), and 997 (Carrera) equipped with manual transmissions. This roller maintains proper tension on the serpentine belt, ensuring the efficient operation of engine accessories such as the alternator, power steering pump, and air conditioning compressor.


oematch

Fits:

  • Porsche Boxster 987 S 3.2/3.4L 2005-08/08  Manual transmission
  • Porsche 996 C2 3.4L 1997-08/01  6-speed Manual transmission
  • Porsche 996 C4 3.4L 1997-08/01  6-speed Manual transmission
  • Porsche 996 C2 3.6L 09/01-2005  6-speed Manual transmission
  • Porsche 996 C4 3.6L 09/01-2005  6-speed Manual transmission
  • Porsche 996 C4S 3.6L 09/01-2005  6-speed Manual transmission
  • Porsche 997 MK1 Carrera 2 3.6L 2005-08  6-speed Manual transmission
  • Porsche 997 MK1 Carrera 2S 3.8L 2005-08  6-speed Manual transmission
  • Porsche 997 MK1 Carrera 4 3.6L 2005-08  6-speed Manual transmission
  • Porsche 997 MK1 Carrera 4S 3.8L 2005-08  6-speed Manual transmission
  • Porsche Cayman 2.7L 987C 2006-08  Manual transmission
  • Porsche Cayman S 3.4L 987C 2005-08  Manual transmission


Common Tensioning Roller Issues and Why Replacement is Necessary. Over time, a tensioning roller can wear down due to constant exposure to engine heat and mechanical stress. Typical problems include:

  • Bearing Wear: The internal bearing may deteriorate, causing noise and reducing performance.
  • Seized Pulley: Rust or corrosion can lock the pulley, disrupting proper belt tension.
  • Cracked or Damaged Pulley: Physical damage can misalign the belt and hinder the roller’s function.
  • Replacing a worn tensioning roller is crucial to maintain proper belt operation, prevent squealing noises, and avoid potential damage to other engine components.


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Diagram ref no 8



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99710211700
99710211700
4149031008

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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



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99610211757
99610211757

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99610215168/3
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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

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99610215168
99610215166
99610215164
99610215168

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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

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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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