Description
Gates is a global leader in automotive belts, tensioners, hoses, and cooling system components—engineered for reliability, durability and OEM-grade performance. With over 100 years of innovation, Gates products are designed to meet or exceed manufacturer specifications, ensuring perfect fit, quiet operation, and long-lasting service life.
Why Choose This Product
✔ Perfect Fit Guaranteed
OE-equivalent specifications ensure exact compatibility with your vehicle
✔ Premium Quality
Manufactured to meet or exceed original equipment standards
✔ Trusted Brand
Proven reliability and performance you can depend on
Product Specifications
| Brand: | GATES |
| Manufacturer Part Number (MPN): | OAP7178 |
| Items Included: | 1x Alternator Freewheel Clutch |
| Universal Fitment: | No |
| Country/Region of Manufacture: | Germany |
| Make/Model: | Gates Alternator Overrunning Freewheel Clutch fits Opel Astra |
| Warranty: | 2 years or 100 000 km / 60 000 mi |
| Part Type: | Alternator Freewheel Clutch |
| Outer Diameter: | 59 mm |
| Width: | 48 mm |
| Inner Diameter: | 17 mm |
| Number Of Grooves: | 6 |
Installation & Performance
- Direct Replacement: No modifications required – fits like original equipment
- Professional Quality: Meets stringent OE standards for reliability
- Tested Performance: Rigorously tested for durability and longevity
Warranty & Quality Assurance
Gates products come with a manufacturer’s warranty covering defects in materials or workmanship for the specified service life of the part. If a defect is found under normal use and proper installation, Gates will repair or replace the component as required. This warranty does not cover damage caused by incorrect fitting, misuse, contamination, or normal wear and tear. Gates is known for exceptional quality and rigorous testing, so you can buy with confidence knowing your part is backed by a trusted global manufacturer.
Vehicle Compatibility
The following vehicles are supported by this part number. Always verify exact measurements and specs.
| Make | Model | Variant | BodyStyle | Type | Year | Engine |
|---|---|---|---|---|---|---|
| Vauxhall | Zafira | Diesel MPV | FWD Mk III P12 | 2.0 CDTi | 2015|2016|2017|2018 | 1956cc 125KW 170HP B 20 DTH |
| Opel | Insignia | Diesel Estate | AWD A G09 | 2.0 CDTi 4×4 | 2013|2014|2015|2016|2017 | 1956cc 143KW 194HP A 20 DTR |
| Opel | Insignia | Diesel Saloon | FWD A G09 | 2.0 CDTi | 2013|2014|2015|2016|2017 | 1956cc 120KW 163HP A 20 DTH |
| Vauxhall | Insignia | Diesel Hatch | FWD Mk I (A) G09 | 2.0 CDTi | 2008|2009|2010|2011|2012|2013|2014 | 1956cc 96KW 130HP A 20 DT;A 20 DTJ |
| Vauxhall | Insignia | Diesel Estate | FWD Mk I (A) G09 | 2.0 BiTurbo CDTI | 2012|2013|2014|2015|2016|2017 | 1956cc 143KW 195HP A 20 DTR |
| Opel | Insignia | Diesel Estate | FWD A G09 | 2.0 CDTi | 2008|2009|2010|2011|2012|2013 | 1956cc 81KW 110HP A 20 DTC;A 20 DTL |
| Vauxhall | Insignia | Diesel Hatch | AWD Mk I (A) G09 | 2.0 BiTurbo CDTI 4×4 | 2012|2013|2014|2015|2016|2017 | 1956cc 143KW 195HP A 20 DTR |
| Opel | Insignia | Diesel Saloon | AWD A G09 | 2.0 BiTurbo CDTI 4×4 | 2008|2009|2010|2011 | 1956cc 140KW 190HP A 20 DTR |
| Opel | Insignia | Diesel Estate | AWD A G09 | 2.0 CDTi 4×4 | 2010|2011|2012|2013|2014|2015 | 1956cc 118KW 160HP A 20 DTH |
| Opel | Insignia | Diesel Estate | FWD A G09 | 2.0 CDTi | 2012|2013|2014|2015|2016|2017 | 1956cc 88KW 120HP A 20 DTE |
| Vauxhall | Insignia | Diesel Estate | AWD Mk I (A) G09 | 2.0 BiTurbo CDTI 4×4 | 2012|2013|2014|2015|2016|2017 | 1956cc 143KW 195HP A 20 DTR |
| Opel | Insignia | Diesel Hatch | FWD A G09 | 2.0 CDTi | 2012|2013|2014|2015|2016|2017 | 1956cc 88KW 120HP A 20 DTE |
| Opel | Insignia | Diesel Estate | FWD A G09 | 2.0 CDTi | 2013|2014|2015 | 1956cc 120KW 163HP A 20 DTH |
| Vauxhall | Insignia | Diesel Hatch | AWD Mk I (A) G09 | 2.0 CDTI 4×4 | 2008|2009|2010|2011|2012|2013|2014|2015|2016|2017 | 1956cc 118KW 160HP A 20 DTH |
| Opel | Insignia | Diesel Hatch | AWD A G09 | 2.0 BiTurbo CDTI 4×4 | 2009|2010|2011 | 1956cc 140KW 190HP A 20 DTR |
| Vauxhall | Astra | Diesel Hatch | FWD Mk VI (J) P10 | 2.0 BiTurbo CDTI | 2012|2013|2014|2015|2016|2017|2018 | 1956cc 143KW 194HP A 20 DTR |
| Opel | Insignia | Diesel Hatch | AWD A G09 | 2.0 CDTi 4×4 | 2013|2014|2015|2016|2017 | 1956cc 120KW 163HP A 20 DTH |
| Opel | Zafira Tourer | Diesel MPV | FWD C P12 | 2.0 BiTurbo CDTI | 2013|2014|2015|2016|2017|2018|2019|2020|2021|2022|2023|2024|2025 | 1956cc 143KW 194HP A 20 DTR |
| Opel | Zafira Tourer | Diesel Van-Based MPV | FWD C P12 | 2.0 CDTi | 2013|2014|2015|2016|2017|2018|2019|2020|2021|2022|2023|2024|2025 | 1956cc 81KW 110HP A 20 DTL |
| Opel | Insignia | Diesel Saloon | FWD A G09 | 2.0 CDTi | 2008|2009|2010|2011|2012|2013|2014|2015|2016|2017 | 1956cc 96KW 131HP A 20 DT;A 20 DTJ |
| Opel | Zafira Tourer | Diesel MPV | FWD C P12 | 2.0 CDTi | 2011|2012|2013|2014|2015|2016|2017|2018|2019|2020|2021|2022|2023|2024|2025 | 1956cc 121KW 165HP A 20 DTH |
| Vauxhall | Insignia | Diesel Saloon | FWD Mk I (A) G09 | 2.0 BiTurbo CDTI | 2012|2013|2014|2015|2016|2017 | 1956cc 143KW 195HP A 20 DTR |
| Vauxhall | Insignia | Diesel Estate | FWD Mk I (A) G09 | 2.0 CDTi | 2008|2009|2010|2011|2012|2013|2014|2015|2016|2017 | 1956cc 140KW 190HP A 20 DTR |
| Vauxhall | Insignia | Diesel Hatch | FWD Mk I (A) G09 | 2.0 BiTurbo CDTI | 2012|2013|2014|2015|2016|2017 | 1956cc 143KW 195HP A 20 DTR |
| Opel | Insignia | Diesel Saloon | FWD A G09 | 2.0 CDTi | 2012|2013|2014|2015|2016|2017 | 1956cc 88KW 120HP A 20 DTE |
| Vauxhall | Insignia | Diesel Saloon | FWD Mk I (A) G09 | 2.0 CDTi | 2008|2009|2010|2011|2012|2013|2014|2015|2016|2017 | 1956cc 140KW 190HP A 20 DTR |
| Opel | Insignia | Diesel Hatch | FWD A G09 | 2.0 BiTurbo CDTI | 2012|2013|2014|2015|2016|2017 | 1956cc 143KW 195HP A 20 DTR |
| Vauxhall | Insignia | Diesel Saloon | FWD Mk I (A) G09 | 2.0 CDTi | 2008|2009|2010|2011|2012|2013|2014|2015|2016|2017 | 1956cc 118KW 160HP A 20 DTH |
| Opel | Astra | Diesel Hatch | FWD J P10 | 2.0 BiTurbo CDTI | 2012|2013|2014|2015 | 1956cc 143KW 194HP A 20 DTR |
| Opel | Insignia | Diesel Estate | AWD A G09 | 2.0 CDTi 4×4 | 2013|2014|2015 | 1956cc 120KW 163HP A 20 DTH |
| Vauxhall | Insignia | Diesel Saloon | FWD Mk I (A) G09 | 2.0 CDTi | 2008|2009|2010|2011|2012|2013|2014 | 1956cc 96KW 130HP A 20 DT;A 20 DTJ |
| Vauxhall | Zafira | Diesel MPV | FWD Mk III P12 | 2.0 CDTi | 2011|2012|2013|2014|2015|2016|2017|2018 | 1956cc 81KW 110HP A 20 DTL |
| Opel | Insignia | Diesel Hatch | FWD A G09 | 2.0 BiTurbo CDTI | 2008|2009|2010|2011 | 1956cc 140KW 190HP A 20 DTR |
| Vauxhall | Insignia | Diesel Estate | AWD Mk I (A) G09 | 2.0 CDTI 4×4 | 2009|2010|2011|2012|2013|2014|2015|2016|2017 | 1956cc 140KW 190HP A 20 DTR |
| Opel | Astra |
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