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Porsche // 992 (911) MK2 2024>> // 992.2 Carrera T 3.0L 2024>>
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Drive belt deflection roller Porsche 996 Turbo / 997 Turbo / GT3 - 99611501576
99611501576/1
Vehicle Group
- Porsche 996 TURBO 2000-05
- 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
Information
Drive Belt Deflection Roller.
Diagram Ref No 8
Symptoms Of Wear Or Failure:
Over time, continuous rotation, engine heat, vibration and contamination can cause the bearings and pulley surfaces of the drive belt deflection roller to deteriorate.
Why Replacement Matters:
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99611501576
The product you are viewing cross references to these numbers
The OE MATCH Drive Belt Deflection Roller is a high-quality replacement auxiliary drive belt component designed for Porsche 996 Turbo, 997 Turbo and GT3 models. Manufactured to provide OE-style fitment and reliable operation, this deflection roller helps guide the engine's auxiliary drive belt along its designated path, ensuring smooth and consistent operation of the belt-driven accessories.
Fits:- Porsche 996 Turbo
- Porsche 997 Turbo
- Porsche 996 GT3 1999-05
- Porsche 997 GT3 2007-11
Diagram Ref No 8
Also known as an idler pulley or guide roller, this component forms part of the engine's auxiliary belt drive system. It works alongside the drive belt and tensioner assembly to maintain correct belt alignment and routing during engine operation.
The roller incorporates a rotating pulley and bearing assembly designed to accommodate continuous engine operation, vibration and changing rotational speeds.
Over time, the original roller bearings can deteriorate due to age, heat, contamination and prolonged use, potentially resulting in excessive noise, poor belt tracking or complete bearing failure.
Ideal for replacing worn, noisy, seized or damaged original rollers, the OE MATCH Drive Belt Deflection Roller provides a practical replacement solution for routine servicing, preventative maintenance and engine repairs.
What This Product Does:The drive belt deflection roller guides the auxiliary drive belt around the engine's pulley system, helping maintain the correct belt routing and alignment.
Unlike the belt tensioner, which applies the necessary tension to the belt, the deflection roller primarily provides guidance and support to ensure the belt follows its intended path.
Its key functions include:
- Drive Belt Guidance: Directs the auxiliary drive belt along the correct route around the engine's pulley system.
- Belt Alignment: Helps maintain proper belt positioning and prevents unwanted lateral movement.
- Smooth Belt Operation: The integrated bearing allows the pulley to rotate freely as the drive belt moves across its surface.
- Auxiliary System Support: Contributes to reliable operation of the engine accessories driven by the auxiliary belt.
- Reduced Belt Vibration: Helps maintain stable belt tracking and minimise unwanted movement during engine operation.
- Reduced Operating Noise: A correctly functioning roller supports smooth, quiet belt movement.
- Belt Wear Prevention: Proper alignment helps reduce uneven belt wear, edge damage and premature deterioration.
- Consistent Belt Routing: Maintains the intended belt path as engine speed changes.
- OE-Style Fitment: Provides a replacement for the original guide roller without modification to the specified mounting arrangement.
Symptoms Of Wear Or Failure:
Over time, continuous rotation, engine heat, vibration and contamination can cause the bearings and pulley surfaces of the drive belt deflection roller to deteriorate.
Common signs include:
- Squealing or Chirping Noises: High-pitched noises from the auxiliary belt area may indicate worn bearings, poor belt alignment or excessive friction.
- Grinding or Rumbling Sounds: A deteriorating pulley bearing may produce grinding, rumbling or growling noises while the engine is running.
- Excessive Pulley Play: Side-to-side movement or looseness may indicate wear within the roller bearing.
- Rough Pulley Rotation: A worn bearing may feel rough, notchy or resistant when the pulley is rotated by hand with the belt removed.
- Seized or Sticking Roller: Bearing failure can prevent the pulley from rotating freely, potentially causing the drive belt to slide across a stationary surface.
- Visible Pulley Wobble: A damaged bearing or mounting arrangement may cause the roller to rotate unevenly.
- Uneven Drive Belt Wear: Incorrect tracking can cause excessive wear along the belt edges or running surface.
- Cracked or Damaged Pulley Surface: Physical damage or deterioration may affect smooth belt movement.
- Excessive Belt Vibration: An unstable pulley or incorrectly tensioned belt may produce visible belt movement during operation.
- Burning Rubber Smell: A seized roller can generate friction and heat, potentially damaging the drive belt.
- Drive Belt Slipping or Coming Off: Severe bearing failure or incorrect pulley alignment may cause the belt to move out of position.
- Auxiliary Drive Failure: If the roller seizes or the belt breaks, belt-driven accessories may stop operating.
Why Replacement Matters:
- Replacing a worn or damaged drive belt deflection roller is an important part of maintaining the reliability and correct operation of your Porsche's auxiliary drive belt system.
- The auxiliary drive belt operates continuously while the engine is running, transferring rotational power to essential belt-driven components. The deflection roller plays a critical role in guiding this belt and maintaining its correct path around the engine.
- As the roller bearing deteriorates, it may develop excessive play, resistance or noise. Continued operation with a worn roller can cause incorrect belt tracking, increased friction and premature belt wear.
- If the bearing becomes severely damaged or seizes completely, the belt may overheat, shred or break, potentially causing the sudden loss of belt-driven accessory operation.
- Depending on the engine configuration, auxiliary belt failure can affect important components such as the alternator and water pump. Loss of water pump operation may result in engine overheating, while alternator failure can lead to battery discharge and electrical system problems.
- A failed roller may also damage surrounding pulleys, tensioners or other components within the auxiliary drive system, potentially increasing repair costs.
- Installing a replacement OE MATCH deflection roller helps restore smooth pulley rotation, correct belt guidance and reliable auxiliary drive operation.
- Replacing worn rollers during scheduled belt maintenance is particularly beneficial because it allows associated components to be inspected and renewed before a more serious failure occurs.
- For high-performance Porsche Turbo and GT3 engines, maintaining the condition of the auxiliary drive system is especially important during demanding driving conditions and high engine speeds.
- The OE MATCH Drive Belt Deflection Roller 99611501576/1 offers an OE-style replacement solution designed to support dependable belt operation, reduce unwanted noise and help protect the engine's auxiliary drive components.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99611501576
99611501576
99611501571
4149031003
34537
99611501574
99611501573
The product you are viewing cross references to these numbers
Price: £110.00
In stock
Related products
Vehicle Group
- 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 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 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 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 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 992.2 Carrera 2 3.0L 2024>>
- Porsche 992.2 Carrera 2S 3.0L 2024>>
- Porsche 992.2 Carrera T 3.0L 2024>>
- Porsche 992.2 Carrera 4S 3.0L 2024>>
- Porsche 992.2 Carrera 2 3.0L Cabriolet 2024>>
- 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)
Information
Drive Belt. Porsche 981 / 981C / 991.1 / 991.2 / 992 / GT4
Fits:
Porsche 991.1 Carrera 3.4L 2012-16 Engine MA1.04
Porsche 991.1 Carrera S 3.8L 2012-2016 Engine MA1.03
Cars without PDCC
Porsche 991.2 Carrera 3.0L 2017>> Engine MDC.KA
Cars without sport chassis
Porsche 992 Carrera
Porsche 992 S and GTS from 15.06.20
Cars without PDCC
Porsche 992.2 Carrera 2
Porsche 991.1 Turbo 3.8L 2014-18 Engine MA1.71
Porsche 991.2 Turbo 3.8L 2018-20
Cars without PDCC
Porsche 981 Boxster 2012-16
Porsche 981SP Boxster Spyder 2016
Porsche 982 (718) Boxster GTS 4.0Ltr
Porsche 981C Cayman 2014-16
Porsche 981 Cayman GT4 2016
Porsche 982C (718C) Cayman GTS 4.0Ltr
Diagram ref no 7
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
0PB903137G
The product you are viewing cross references to these numbers
Fits:
Porsche 991.1 Carrera 3.4L 2012-16 Engine MA1.04
Porsche 991.1 Carrera S 3.8L 2012-2016 Engine MA1.03
Cars without PDCC
Porsche 991.2 Carrera 3.0L 2017>> Engine MDC.KA
Cars without sport chassis
Porsche 992 Carrera
Porsche 992 S and GTS from 15.06.20
Cars without PDCC
Porsche 992.2 Carrera 2
Porsche 991.1 Turbo 3.8L 2014-18 Engine MA1.71
Porsche 991.2 Turbo 3.8L 2018-20
Cars without PDCC
Porsche 981 Boxster 2012-16
Porsche 981SP Boxster Spyder 2016
Porsche 982 (718) Boxster GTS 4.0Ltr
Porsche 981C Cayman 2014-16
Porsche 981 Cayman GT4 2016
Porsche 982C (718C) Cayman GTS 4.0Ltr
Diagram ref no 7
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
0PB903137G
9A110221800
6K1767
6PK1767
0PB903137A
0PB903137G
The product you are viewing cross references to these numbers
Price: £57.72
In stock
Vehicle Group
- 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 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 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 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 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 992.2 Carrera 2 3.0L 2024>>
- Porsche 992.2 Carrera 2S 3.0L 2024>>
- Porsche 992.2 Carrera T 3.0L 2024>>
- Porsche 992.2 Carrera 4S 3.0L 2024>>
- Porsche 992.2 Carrera 2 3.0L Cabriolet 2024>>
- 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)
Information
Drive belt
This OE Match drive belt is a replacement auxiliary / serpentine belt for selected Porsche 981, 981C Cayman, 991.1, 991.2, 992, and GT4 models. This drive belt fits on the engine auxiliary belt drive system. It runs around the designated pulleys according to the factory belt routing for the specific Porsche model and engine type.
Fits:
Porsche 991.1 Carrera 3.4L 2012-16 Engine MA1.04
Porsche 991.1 Carrera S 3.8L 2012-2016 Engine MA1.03
Cars without PDCC
Porsche 991.2 Carrera 3.0L 2017>> Engine MDC.KA
Cars without sport chassis
Porsche 992 Carrera
Porsche 992 S and GTS from 15.06.20
Cars without PDCC
Porsche 992.2 Carrera 2
Porsche 991.1 Turbo 3.8L 2014-18 Engine MA1.71
Porsche 991.2 Turbo 3.8L 2018-20
Cars without PDCC
Porsche 981 Boxster 2012-16
Porsche 981SP Boxster Spyder 2016
Porsche 982 (718) Boxster GTS 4.0Ltr
Porsche 981C Cayman 2014-16
Porsche 981 Cayman GT4 2016
Porsche 982C (718C) Cayman GTS 4.0Ltr
Diagram ref no 7
The drive belt transfers rotational power from the engine pulley system to the auxiliary components. Depending on the vehicle specification, it may drive components such as the alternator, water pump, air conditioning compressor, or other belt-driven accessories. A correctly tensioned and good-condition belt is essential for reliable engine and charging system operation.
Functions
• Drives engine auxiliary components
• Helps power belt-driven systems such as charging, cooling, and air conditioning
• Supports reliable alternator and accessory operation
• Helps maintain correct auxiliary pulley function
• Replaces cracked, worn, noisy, stretched, or damaged original belts
• Supports smooth and efficient engine accessory drive operation
• OE Match replacement for routine service and preventative maintenance.
Why Replace This Part?
Drive belts are exposed to heat, friction, tension, pulley load, oil contamination, and age-related wear. Over time, the belt can crack, glaze, stretch, fray, squeal, or lose grip. A worn belt can cause belt noise, charging issues, cooling problems, air conditioning faults, or complete accessory drive failure. Replacing the drive belt helps maintain reliability and prevents avoidable breakdowns.
When to Replace This Part
• The belt is cracked, frayed, glazed, or visibly worn
• Squealing or chirping noises are heard from the belt area
• The belt has become contaminated with oil or coolant
• The auxiliary belt tensioner or pulleys are being replaced
• Charging, cooling, or air conditioning performance is affected
• The belt has been removed during engine service
• Preventative replacement is being carried out during routine maintenance
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
0PB903137G
The product you are viewing cross references to these numbers
This OE Match drive belt is a replacement auxiliary / serpentine belt for selected Porsche 981, 981C Cayman, 991.1, 991.2, 992, and GT4 models. This drive belt fits on the engine auxiliary belt drive system. It runs around the designated pulleys according to the factory belt routing for the specific Porsche model and engine type.
Fits:
Porsche 991.1 Carrera 3.4L 2012-16 Engine MA1.04
Porsche 991.1 Carrera S 3.8L 2012-2016 Engine MA1.03
Cars without PDCC
Porsche 991.2 Carrera 3.0L 2017>> Engine MDC.KA
Cars without sport chassis
Porsche 992 Carrera
Porsche 992 S and GTS from 15.06.20
Cars without PDCC
Porsche 992.2 Carrera 2
Porsche 991.1 Turbo 3.8L 2014-18 Engine MA1.71
Porsche 991.2 Turbo 3.8L 2018-20
Cars without PDCC
Porsche 981 Boxster 2012-16
Porsche 981SP Boxster Spyder 2016
Porsche 982 (718) Boxster GTS 4.0Ltr
Porsche 981C Cayman 2014-16
Porsche 981 Cayman GT4 2016
Porsche 982C (718C) Cayman GTS 4.0Ltr
Diagram ref no 7
The drive belt transfers rotational power from the engine pulley system to the auxiliary components. Depending on the vehicle specification, it may drive components such as the alternator, water pump, air conditioning compressor, or other belt-driven accessories. A correctly tensioned and good-condition belt is essential for reliable engine and charging system operation.
Functions
• Drives engine auxiliary components
• Helps power belt-driven systems such as charging, cooling, and air conditioning
• Supports reliable alternator and accessory operation
• Helps maintain correct auxiliary pulley function
• Replaces cracked, worn, noisy, stretched, or damaged original belts
• Supports smooth and efficient engine accessory drive operation
• OE Match replacement for routine service and preventative maintenance.
Why Replace This Part?
Drive belts are exposed to heat, friction, tension, pulley load, oil contamination, and age-related wear. Over time, the belt can crack, glaze, stretch, fray, squeal, or lose grip. A worn belt can cause belt noise, charging issues, cooling problems, air conditioning faults, or complete accessory drive failure. Replacing the drive belt helps maintain reliability and prevents avoidable breakdowns.
When to Replace This Part
• The belt is cracked, frayed, glazed, or visibly worn
• Squealing or chirping noises are heard from the belt area
• The belt has become contaminated with oil or coolant
• The auxiliary belt tensioner or pulleys are being replaced
• Charging, cooling, or air conditioning performance is affected
• The belt has been removed during engine service
• Preventative replacement is being carried out during routine maintenance
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
0PB903137G
9A110221800
6K1767
6PK1767
0PB903137A
0PB903137G
The product you are viewing cross references to these numbers
Price: £23.60
In stock