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Engine timing chain tensioner O-ring, 12 x 1.78mm. Porsche 911 84-89 / 964 Turbo 3.0L ❭ 99970169040
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) TURBO 3.3L 1991-93
This O-Ring is an OE-style sealing ring designed for the engine timing chain tensioner assembly on Porsche 911 and 964 Turbo models. It provides a leak-proof seal between the hydraulic chain tensioner and engine housing. The O-ring measures approximately 12 x 1.78 mm.
Sold individually, 2 required per engine
Fits:
Porsche 911 1984 - 1989
Porsche 964 Turbo 3.3L 1990 - 1992 (Engine code: 3069)
Diagram ref no 11
Installed between the hydraulic chain tensioner and engine housing, the O-ring prevents engine oil leakage while maintaining proper hydraulic pressure within the timing chain tensioner system. Correct sealing is essential for reliable chain tension control and accurate engine valve timing. A compromised seal may result in oil leaks, pressure loss, or reduced tensioner performance.
This O-ring is ideal for preventative maintenance, engine rebuilds, timing chain service work, or replacement during tensioner overhaul procedures.
The O-ring seals the hydraulic timing chain tensioner assembly, preventing oil leakage and helping maintain proper hydraulic pressure within the timing system. This supports reliable timing chain operation and accurate engine valve timing.
Function
• Seals hydraulic timing chain tensioner assembly
• Prevents engine oil leakage around tensioner housing
• Maintains hydraulic pressure within timing system
• Supports accurate timing chain tension operation
• Resists heat, oil exposure, and pressure cycling
Over time, engine O-rings can harden, flatten, or crack due to heat exposure, oil contamination, and age. A failing tensioner seal may cause oil leaks and reduced hydraulic pressure, potentially affecting timing chain tension stability. Replacing worn O-rings during service helps maintain reliable engine lubrication and timing system operation.
When to replace
• Oil leakage around timing chain tensioner
• During timing chain or tensioner servicing
• Hardened, flattened, or damaged O-ring seal
• During engine rebuild or overhaul
• Preventative maintenance on high-mileage engines
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99970169040
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- Porsche 9YA Cayenne V6 3.0L Petrol (340Hp) 2018-23
- Porsche 9YA Cayenne Coupe V6 3.0L Petrol (340Hp) 2019-23
- Porsche 9YA Cayenne E-Hybrid V6 3.0L V6 (340Hp) 2018-23
- Porsche 9YA Cayenne Coupe E-Hybrid V6 3.0L (340Hp) 2020-23
- Porsche 9YA Cayenne S V6 2.9L Petrol (440Hp) 2018-23
- Porsche 9YA Cayenne Coupe S V6 2.9L Petrol (440Hp) 2019-23
- Porsche 971.1 Panamera V6 3.0L 2WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 3.0L Turbocharged V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD (440 Hp) 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4S 2.9L Twin-Turbo V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD 2017-20
- Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 E-Hybrid 2.9L Twin-Turbo V6 Sport Turismo 2017-20
- Porsche 971.2 Panamera 2.9L V6 2021-23
- Porsche 971.2 Panamera 4 2.9L V6 2021-23
- Porsche 971.2 Panamera 4 Sport Turismo 2.9L V6 2021-23
- Porsche 971.2 Panamera 4S 2.9L V6 2021-23
- Porsche 971.2 Panamera 4S Sport Turismo 2.9L V6 2021-23
- Porsche 971.2 Panamera 4 E-Hybrid 2.9L V6 2021-23
- Porsche 971.2 Panamera 4 E-Hybrid Sport Turismo 2.9L V6 2021-23
- Porsche 971.2 Panamera 4S E-Hybrid 2.9L V6 2021-23
- Porsche 971.2 Panamera 4S E-Hybrid Sport Turismo 2.9L V6 2021-23
- Porsche 95B.2 Macan S Petrol 3.0L V6 (354Bhp) 2019-21
- Porsche 95B.2 Macan GTS Petrol 2.9L V6 (380Bhp) 2019-21
- Porsche 95B.2 Macan Turbo 2.9L V6 (440Bhp) 2019-21
- Porsche 95B.3 Macan S Petrol 2.9L V6 (380Bhp) 2022>>
- Porsche 95B.3 Macan GTS Petrol 2.9L V6 (440Bhp) 2022>>

Fits:
Porsche 95B.2 Macan S / GTS / turbo - 2019 to 2021
Porsche 95B.3 Macan S / GTS - 2022 Onwards
Porsche 971.1 Panamera 2.9ltr V6 - 2017 to 2020
Porsche 971.1 Panamera 3.0ltr V6 - 2017 to 2020
Porsche 971.2 Panamera 2.9ltr V6 - 2021 to 2023
Porsche 9YA Cayenne 2.9ltr V6 - 2018 to 2023
Porsche 9YA Cayenne 3.0ltr V6 - 2018 to 2023
Fits Engine Codes
95B.2 / 95B.3 - DLZ / DLZB / DGR / DGRB / DGRC
971 Panamera - CSZA / CSZ / CXTA / CXT / DGPA / DGP / CSZB / CSZ
9YA Cayenne - DCAB / DCA / DCBE / DCB
Click 'Zoom in' for large parts diagram.
Diagram ref no 1
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PAC109450
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- Porsche 9YA Cayenne V6 3.0L Petrol (340Hp) 2018-23
- Porsche 9YA Cayenne Coupe V6 3.0L Petrol (340Hp) 2019-23
- Porsche 9YA Cayenne E-Hybrid V6 3.0L V6 (340Hp) 2018-23
- Porsche 9YA Cayenne Coupe E-Hybrid V6 3.0L (340Hp) 2020-23
- Porsche 9YA Cayenne S V6 2.9L Petrol (440Hp) 2018-23
- Porsche 9YA Cayenne Coupe S V6 2.9L Petrol (440Hp) 2019-23
- Porsche 971.1 Panamera V6 3.0L 2WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 3.0L Turbocharged V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD (440 Hp) 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4S 2.9L Twin-Turbo V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD 2017-20
- Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 E-Hybrid 2.9L Twin-Turbo V6 Sport Turismo 2017-20
- Porsche 971.2 Panamera 2.9L V6 2021-23
- Porsche 971.2 Panamera 4 2.9L V6 2021-23
- Porsche 971.2 Panamera 4 Sport Turismo 2.9L V6 2021-23
- Porsche 971.2 Panamera 4S 2.9L V6 2021-23
- Porsche 971.2 Panamera 4S Sport Turismo 2.9L V6 2021-23
- Porsche 971.2 Panamera 4 E-Hybrid 2.9L V6 2021-23
- Porsche 971.2 Panamera 4 E-Hybrid Sport Turismo 2.9L V6 2021-23
- Porsche 971.2 Panamera 4S E-Hybrid 2.9L V6 2021-23
- Porsche 971.2 Panamera 4S E-Hybrid Sport Turismo 2.9L V6 2021-23
- Porsche 95B.2 Macan S Petrol 3.0L V6 (354Bhp) 2019-21
- Porsche 95B.2 Macan GTS Petrol 2.9L V6 (380Bhp) 2019-21
- Porsche 95B.2 Macan Turbo 2.9L V6 (440Bhp) 2019-21
- Porsche 95B.3 Macan S Petrol 2.9L V6 (380Bhp) 2022>>
- Porsche 95B.3 Macan GTS Petrol 2.9L V6 (440Bhp) 2022>>

Fits:
Porsche 95B.2 Macan S / GTS / turbo - 2019 to 2021
Porsche 95B.3 Macan S / GTS - 2022 Onwards
Porsche 971.1 Panamera 2.9ltr V6 - 2017 to 2020
Porsche 971.1 Panamera 3.0ltr V6 - 2017 to 2020
Porsche 971.2 Panamera 2.9ltr V6 - 2021 to 2023
Porsche 9YA Cayenne 2.9ltr V6 - 2018 to 2023
Porsche 9YA Cayenne 3.0ltr V6 - 2018 to 2023
Fits Engine Codes
95B.2 / 95B.3 - DLZ / DLZB / DGR / DGRB / DGRC
971 Panamera - CSZA / CSZ / CXTA / CXT / DGPA / DGP / CSZB / CSZ
9YA Cayenne - DCAB / DCA / DCBE / DCB
Click 'Zoom in' for large parts diagram.
Diagram ref no 10
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Related, superseded, cross reference or alternative numbers for comparison.
PAC109229A
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- Porsche 9YA Cayenne Coupe V6 3.0L Petrol (340Hp) 2019-23
- Porsche 9YA Cayenne E-Hybrid V6 3.0L V6 (340Hp) 2018-23
- Porsche 9YA Cayenne Coupe E-Hybrid V6 3.0L (340Hp) 2020-23
- Porsche 9YA Cayenne S V6 2.9L Petrol (440Hp) 2018-23
- Porsche 9YA Cayenne Coupe S V6 2.9L Petrol (440Hp) 2019-23
- Porsche 971.1 Panamera V6 3.0L 2WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 3.0L Turbocharged V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD (440 Hp) 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4S 2.9L Twin-Turbo V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD 2017-20
- Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 E-Hybrid 2.9L Twin-Turbo V6 Sport Turismo 2017-20
- Porsche 971.2 Panamera 2.9L V6 2021-23
- Porsche 971.2 Panamera 4 2.9L V6 2021-23
- Porsche 971.2 Panamera 4 Sport Turismo 2.9L V6 2021-23
- Porsche 971.2 Panamera 4S 2.9L V6 2021-23
- Porsche 971.2 Panamera 4S Sport Turismo 2.9L V6 2021-23
- Porsche 971.2 Panamera 4 E-Hybrid 2.9L V6 2021-23
- Porsche 971.2 Panamera 4 E-Hybrid Sport Turismo 2.9L V6 2021-23
- Porsche 971.2 Panamera 4S E-Hybrid 2.9L V6 2021-23
- Porsche 971.2 Panamera 4S E-Hybrid Sport Turismo 2.9L V6 2021-23
- Porsche 95B.2 Macan S Petrol 3.0L V6 (354Bhp) 2019-21
- Porsche 95B.2 Macan GTS Petrol 2.9L V6 (380Bhp) 2019-21
- Porsche 95B.2 Macan Turbo 2.9L V6 (440Bhp) 2019-21
- Porsche 95B.3 Macan S Petrol 2.9L V6 (380Bhp) 2022>>
- Porsche 95B.3 Macan GTS Petrol 2.9L V6 (440Bhp) 2022>>

Fits:
Porsche 95B.2 Macan S / GTS / turbo - 2019 to 2021
Porsche 95B.3 Macan S / GTS - 2022 Onwards
Porsche 971.1 Panamera 2.9ltr V6 - 2017 to 2020
Porsche 971.1 Panamera 3.0ltr V6 - 2017 to 2020
Porsche 971.2 Panamera 2.9ltr V6 - 2021 to 2023
Porsche 9YA Cayenne 2.9ltr V6 - 2018 to 2023
Porsche 9YA Cayenne 3.0ltr V6 - 2018 to 2023
Fits Engine Codes
95B.2 / 95B.3 - DLZ / DLZB / DGR / DGRB / DGRC
971 Panamera - CSZA / CSZ / CXTA / CXT / DGPA / DGP / CSZB / CSZ
9YA Cayenne - DCAB / DCA / DCBE / DCB
Click 'Zoom in' for large parts diagram.
Diagram ref no 19
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PAC109229
The product you are viewing cross references to these numbers
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