Enter your VAT number here and click Verify:
Your details have been verified. VAT number registered to:
,
.
Your order will now be zero rated for VAT purposes. We reserve the right to verify these details after your order request has been made and reinstate VAT if required.
Your VAT details were not recognised or were invalid. Your VAT number must be matched to your Billing Country as specified above. This is currently specified as . You do not need to enter the country code part of your VAT number as this has already been selected in your billing address details above.
The VAT number checking service is currently offline. Please supply your VAT details within the comments or special instructions field below and we will apply a VAT discount after placing your order request.
Belts / Tensioners / Rollers
Fits:
Porsche 996 Turbo / GT2 2001>>2005
Porsche 997.1 Turbo / GT2 M97.70 MKI 2007>>2009
Porsche 997.2 Turbo / GT2 RS M97.70 MKII 2010>>2013
Porsche 996 GT3 M96.76 / M96.79 1999>>2005
Porsche 997.1 GT3 M97.76 MK1 2007>>2009
Porsche 997.2 GT3 M97.77 / M97.74 MKII 2010>>2011
Diagram Ref No 1
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99611511270
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13

Fits:
Porsche 996 Turbo 2001-05
Porsche 996 GT2 2001-05
Porsche 996 GT3 M96.76 / 79 2000-2005
Porsche 997.1 Turbo M97.70 2007-2009
Porsche 997.2 Turbo M97.70 3.6L 2010-2011
Porsche 997 GT2 RS 3.6L
Porsche 997 GT3 M97.76 3.6L / M97.74 3.8L / M97.77 4.0L
Click 'Zoom in' for large parts diagram.
Diagram ref No 10
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99611522172
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
The Genuine Porsche 99919237951 drive belt is an OE Poly-V / serpentine belt for selected Porsche 996 Turbo and 997 Turbo models with air conditioning. It drives the engine auxiliary components according to the A/C belt routing, helping maintain reliable charging, air-conditioning and accessory system operation. Ideal for routine service or replacing a cracked, noisy, slipping or worn original belt.
Fits:
Porsche 996 Turbo 2000-2005 M96.70 Engine
Porsche 996 GT2 M96.70 Engine
Porsche 997 Turbo 2007-2009 3.6L M97.70 Engine
Porsche 997 GT2 RS 2011 M97.70 Engine
Diagram ref no 9
This belt is specifically listed for Porsche 996 Turbo / 997 Turbo applications with air conditioning. It replaces earlier Porsche part number 99919237950.
What This Part Does / Functions
• Transfers drive from the engine pulley system to auxiliary components
• Supports operation of the alternator and other belt-driven accessories
• Works with the air-conditioning compressor drive layout on cars with A/C
• Helps maintain correct accessory belt routing and pulley engagement
• Supports reliable charging and auxiliary system operation
• Helps prevent belt slip, squeal and accessory-drive faults when correctly fitted
• Provides the correct OE Porsche belt profile, length and fitment
• Replaces a cracked, worn, stretched, glazed or noisy original belt.
Why Replace This Part?
The drive belt is a service wear item and is exposed to heat, tension, pulley contact and engine movement. Over time, it can crack, glaze, stretch, fray or lose grip on the pulleys. A worn belt may cause squealing, slipping, charging issues, air-conditioning faults or complete accessory-drive failure. Replacing it with a Genuine Porsche OE drive belt helps restore reliable accessory drive operation and ensures the correct belt specification is used for Turbo models with air conditioning.
When to Replace This Part
• f the belt is cracked, glazed, frayed or visibly worn
• If the belt squeals, slips or makes noise during engine operation
• If the belt has stretched or no longer runs correctly
• During scheduled service or preventative belt replacement
• When replacing the belt tensioner, idler pulleys, alternator or A/C compressor
• If the belt has been contaminated by oil, coolant or debris
• If charging or air-conditioning faults are linked to belt slip
• When restoring the engine bay with correct OE Porsche service parts.
Where It Fits on the Car
This belt fits on the engine accessory drive system. It routes around the relevant pulleys, tensioner and driven components according to the factory air-conditioning belt layout.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919237951
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MKII GT2 RS 2011-13
This OE Match drive belt is a replacement auxiliary engine belt for Porsche 996 Turbo and 997 Turbo models equipped with air conditioning. It is designed to match the original-style fitment and function. This replacement auxiliary belt helps drive engine accessories and supports reliable operation of the vehicle’s charging and auxiliary systems.
Fits:
Porsche 996 Turbo 2000-2005 M96.70 Engine
Porsche 996 GT2 M96.70 Engine
Porsche 997 Turbo 2007-2009 3.6L M97.70 Engine
Porsche 997 GT2 RS 2011 M97.70 Engine
Diagram ref no 9
The drive belt transfers rotational power from the engine pulley to the relevant auxiliary components. On vehicles with air conditioning, the correct belt specification is essential for proper pulley contact, belt tension, and reliable accessory drive operation.
Functions
• Replaces the auxiliary drive belt
• Suitable for cars with air conditioning
• Transfers drive from the engine pulley to auxiliary components
• Helps maintain correct belt tension and pulley contact
• Supports reliable charging and accessory system operation
• Replaces cracked, glazed, stretched, frayed, noisy, or slipping belts
• OE Match replacement for Porsche 996 Turbo and 997 Turbo engine service.
Why Replace This Part?
Drive belts wear over time due to heat, vibration, pulley contact, age, tension changes, and engine bay conditions. A worn belt can crack, glaze, stretch, fray, squeal, slip, or fail completely. If the belt fails, driven auxiliary systems may stop operating correctly, which can lead to warning lights, charging faults, accessory issues, or vehicle breakdown. Replacing the belt helps restore dependable auxiliary drive performance.
When to Replace This Part
• The drive belt is cracked, glazed, frayed, stretched, or worn
• Belt squeal, chirping, or slipping is present
• The belt does not track correctly on the pulleys
• The alternator, pulleys, tensioner, or related components are being serviced
• Charging or accessory drive faults are present
• Preventative belt replacement is being carried out during scheduled maintenance
• The vehicle is undergoing Porsche 996 Turbo or 997 Turbo engine service.
Where it fits on the car
This drive belt fits within the engine auxiliary belt drive system on Porsche 996 Turbo and 997 Turbo models with air conditioning. It runs around the relevant pulleys according to the factory belt routing.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919237951
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MKII GT2 RS 2011-13

Fits
Porsche 997.2 GT2 RS - 2011 to 2012
For cars with Option Code
M574 - No Air Conditioning
Click 'Zoom in' for large parts diagram.
Diagram ref no 9
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710215170
The product you are viewing cross references to these numbers
- Porsche 997 MKII GT2 RS 2011-13
Sold individually; x2 required per vehicle.
Fits:
Porsche 986 Boxster 1997-04
Porsche 987-1 Boxster 2005-08
Porsche 987-1 Cayman 2006-08
Porsche 996 Carrera 1998-05
Porsche 996 Turbo 2001-05
Porsche 996 GT3 1999-05
Porsche 997-1 Carrera 2005-08
Porsche 997-1 Turbo 2007-09
Porsche 997 GT3 2007-11
Porsche 997-2 GT2 RS 2011
Diagram ref. 7.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610236550
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- 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 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT2 RS 2011-13
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08

Fits:
Porsche 997.2 Carrera 2009-12
Porsche 997.2 Turbo 3.8L 2010-13
Porsche 991.1 Carrera 2012-16
Porsche 991.2 Carrera 2017-19
Porsche 991 Turbo 2014-20
Porsche 991 GT3 3.8L 2013-21
Porsche 992.1 Carrera 2019>>
Porsche 992 Turbo 2020>>
Porsche 992 GT3 2021>>
Porsche 987.2 Boxster 2009-12 incl. Spyder
Porsche 981 Boxster 2012-16 incl. Spyder
Porsche 982 Boxster GTS 4.0L / Spyder 4.0L 2017>>
Porsche 987C.2 Cayman 2009-12
Porsche 981C Cayman 2013-16 incl. GT4
Porsche 982C Cayman GTS 4.0L / GT4 4.0L 2017>>
Click 'Zoom in' for large parts diagram
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
0PB903317
The product you are viewing cross references to these numbers
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp) 01/2019>>
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp) 01/2019>>
- Porsche Boxster Spyder / Spyder RS 718 4.0L 01/2019>>
- 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 GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Speedster 4.0L (510Bhp) 2019
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
- Porsche 992.1 Carrera 2 3.0L 2019-24
- Porsche 992.1 Carrera 4 3.0L 2019-24
- Porsche 992.1 Carrera 2 Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 4 Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 2S / GTS 3.0L 2019-24
- Porsche 992.1 Carrera 4S / GTS 3.0L 2019-24
- Porsche 992.1 Carrera 2S / GTS Cabriolet 3.0L 2019-24
- Porsche 992.1 Carrera 4S / GTS Cabriolet 3.0L 2019-24
- Porsche 992.1 Targa 4 3.0L 2020-24
- Porsche 992.1 Targa 4S / GTS 3.0L 2020-24
- Porsche 992.1 Speedster 4.0L 2019-24
- Porsche 992.1 Turbo 3.8L 2020-24
- Porsche 992.1 Turbo S 3.8L 2020-24
- Porsche 992.1 Turbo Cabriolet 3.8L 2020-24
- Porsche 992.1 Turbo S Cabriolet 3.8L 2020-24
- Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
- Porsche 992.1 GT3 RS 4.0L 2022-24
- Porsche 992.1 (911) Sport Classic 3.8L 2023
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
- Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Fits:
Porsche 996 Turbo 2001 - 2005
Porsche 996 GT3 2000 - 2005
Porsche 997 Turbo / GT2 2007 - 2009
Porsche 997 GT2 RS 2011
Porsche 997 GT3 2007 - 2011
Diagram ref no 20
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610623871
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
Sold individually.
Fits:
Porsche 987-1 Boxster 2005-08
Porsche 987-1 Cayman 2006-08
Porsche 996 Turbo 2001-05
Porsche 996 GT2 2001-05
Porsche 996 GT3 / RS 1999-05
Porsche 997-1 Carrera 2005-08
Porsche 997-1 Turbo 2007-09
Porsche 997-1 GT2 2008-09
Porsche 997 GT3 / RS 2007-11
Porsche 997-2 GT2 RS 2010-13
Diagram ref. 5.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90006711705
The product you are viewing cross references to these numbers
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT2 RS 2011-13
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Engine Rebuild Belts, Tensioners & Rollers – Precision Timing for Reliable Porsche Performance
Engine rebuild belts, tensioners, and rollers are essential components in maintaining your Porsche’s precise engine timing and smooth operation. These parts work together to synchronise the camshaft and crankshaft, ensuring valves open and close at exactly the right time for optimal combustion. Over time, these components can wear or deteriorate, especially under high performance or extended use, making replacement vital during an engine rebuild or major service.
At Design911, we supply a full range of genuine and high-quality belts, tensioners, and rollers for various Porsche models including, 911, Boxster, Cayman, Cayenne, Macan, and Panamera models. Each component is designed for strength, accuracy, and long-lasting reliability — ensuring your rebuilt Porsche engine performs flawlessly mile after mile.
What Do Engine Belts, Tensioners & Rollers Do?
These components form the heart of the engine’s timing and
auxiliary systems. They:
- Drive
key engine components, including the camshaft, alternator, and water
pump.
- Maintain
accurate timing for optimal combustion and efficiency.
- Reduce
friction and noise through smooth roller and tensioner operation.
- Ensure consistent belt tension to prevent slippage or premature wear.
Together, they guarantee your Porsche’s engine runs smoothly, efficiently, and reliably — whether cruising or driving at peak performance.
Why Do Belts, Tensioners & Rollers Fail?
Exposure to high temperatures, vibration, and constant
motion causes natural wear over time. Common causes of failure include:
- Aging
rubber belts becoming brittle or cracked.
- Worn
bearings in rollers or tensioners leading to noise or vibration.
- Loss
of tension causing belt slippage or timing misalignment.
- Contamination
from oil or coolant degrading materials.
- Extended maintenance intervals leading to unexpected failure.
Symptoms of failing components include squealing noises, poor engine performance, rough idle, or even timing belt failure, which can cause severe engine damage if ignored.
Why Replace Belts, Tensioners & Rollers During an Engine Rebuild?
Replacing these components during an engine rebuild ensures long-term reliability and eliminates the risk of future timing-related failures. A fresh set of belts, rollers, and tensioners restores precision, efficiency, and performance — protecting your investment.
Benefits of replacement include:
- Restored precise timing and smooth operation.
- Reduced risk of catastrophic engine failure.
- Enhanced reliability and longevity of the rebuild.
- Quieter, more efficient engine performance.
All components available from Design911 are made using premium-grade materials, precision bearings, and advanced heat-resistant compounds, ensuring maximum durability and performance in high-stress Porsche engines.