1997-2011 Porsche Cam Adjuster / Gear Screw Bolt 98710525400
Porsche Part #: 987-105-254-00 (98710525400)
Actual photo
The exact part you’ll receive — not a stock photo.
$5.99
Used
Donor2007 Porsche CAYMAN · 2.7L
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Genuine OEM Used
SKU: 357816
Donor Vehicle: 2007 Porsche CAYMAN · 2.7L
2 photos
$5.99
30-Day Returns
Genuine OEM Used
SKU: 470953
Donor Vehicle: 2007 Porsche CAYMAN · 2.7L
2 photos
M12X1.5X130
$5.99
30-Day Returns
- Genuine OEM — real photos
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A used genuine Porsche 98710525400 Cam Adjuster / Gear Screw Bolt, also replacing 99610525400. This OEM bolt secures the cam adjuster gear on Porsche flat-six (H6) engines found in 911, Boxster, and Cayman models—covering naturally aspirated and turbocharged variants from 2.5L to 4.0L. When the gear screw bolt fails or loosens, it can cause cam timing errors, rough idle, or chain noise.
Specifications
| Fits Vehicle Model | 911, Boxster, Cayman |
| Fits Vehicle Make | Porsche |
| Porsche Part No | 987-105-254-00 (98710525400) |
| Compatible OEM Part No | 996-105-254-00 |
| Category | Cylinder Head |
Compatible Vehicles
Fits 79 vehicle configurations across 1 make, 1997-2011.
Check your specific vehicle before ordering.
This list shows year, make, and model. Some years have multiple trims or
engines that use different parts, and individual listings may have
additional fitment notes (e.g. “with sunroof only”). Review
the full variant list below, or
message us with your VIN
and we’ll confirm the match.
View all 79 vehicle configurations — 52 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2005 | Porsche | 911 | Turbo Coupe | 3.6L Turbo | For Vehicles with Engine Code(s) 9605 |
| 2007 | Porsche | 911 | Carrera S Convertible | 3.8L | For Vehicles with Engine Code(s) 9701 |
| 2007 | Porsche | 911 | GT3 RS Coupe | 3.6L | For Vehicles with Engine Code(s) 9605 |
| 2008 | Porsche | 911 | GT2 Coupe | 3.6L Turbo | For Vehicles with Engine Code(s) 9605 |
| 2005 | Porsche | 911 | GT2 Coupe | 3.6L Turbo | For Vehicles with Engine Code(s) 9605 |
| 2008 | Porsche | 911 | Carrera 4 Coupe | 3.6L | For Vehicles with Engine Code(s) 9605 |
| 2006 | Porsche | 911 | Carrera Convertible | 3.6L | For Vehicles with Engine Code(s) 9605 |
| 2008 | Porsche | 911 | GT3 Coupe | 3.6L | For Vehicles with Engine Code(s) 9605 |
| 2008 | Porsche | 911 | Turbo Convertible | 3.6L Turbo | For Vehicles with Engine Code(s) 9605 |
| 2008 | Porsche | 911 | Carrera 4S Convertible | 3.8L | For Vehicles with Engine Code(s) 9701 |
| 2007 | Porsche | 911 | Turbo Coupe | 3.6L Turbo | For Vehicles with Engine Code(s) 9605 |
| 2006 | Porsche | 911 | Carrera S Convertible | 3.8L | For Vehicles with Engine Code(s) 9701 |
| 2008 | Porsche | 911 | Carrera S Convertible | 3.8L | For Vehicles with Engine Code(s) 9701 |
| 2008 | Porsche | 911 | Carrera 4S Coupe | 3.8L | For Vehicles with Engine Code(s) 9701 |
| 2011 | Porsche | 911 | GT3 RS Coupe | 3.8L | For Vehicles with Engine Code(s) 9777 |
| 2005 | Porsche | 911 | Carrera S Coupe | 3.8L | For Vehicles with Engine Code(s) 9701 |
| 2007 | Porsche | 911 | Carrera S Coupe | 3.8L | For Vehicles with Engine Code(s) 9701 |
| 2005 | Porsche | 911 | Turbo S Coupe | 3.6L Turbo | For Vehicles with Engine Code(s) 9605 |
| 2005 | Porsche | 911 | Carrera 4S Coupe | 3.6L | For Vehicles with Engine Code(s) 9605 |
| 2008 | Porsche | 911 | Turbo Coupe | 3.6L Turbo | For Vehicles with Engine Code(s) 9605 |
| 2010 | Porsche | 911 | GT3 Coupe | 3.8L | For Vehicles with Engine Code(s) 9777 |
| 2005 | Porsche | 911 | Carrera 4S Convertible | 3.6L | For Vehicles with Engine Code(s) 9605 |
| 2007 | Porsche | 911 | Carrera Convertible | 3.6L | For Vehicles with Engine Code(s) 9605 |
| 2007 | Porsche | 911 | Carrera 4 Convertible | 3.6L | For Vehicles with Engine Code(s) 9605 |
| 2007 | Porsche | 911 | Carrera Coupe | 3.6L | For Vehicles with Engine Code(s) 9605 |
| 2006 | Porsche | 911 | Carrera Coupe | 3.6L | For Vehicles with Engine Code(s) 9605 |
| 1999 | Porsche | Boxster | Convertible | 2.5L | |
| 2005 | Porsche | 911 | Turbo S Convertible | 3.6L Turbo | For Vehicles with Engine Code(s) 9605 |
| 2007 | Porsche | 911 | Targa 4 | 3.6L | For Vehicles with Engine Code(s) 9605 |
| 2008 | Porsche | 911 | Targa 4S | 3.8L | For Vehicles with Engine Code(s) 9701 |
| 2007 | Porsche | 911 | Targa 4S | 3.8L | For Vehicles with Engine Code(s) 9701 |
| 2006 | Porsche | 911 | Carrera 4 Coupe | 3.6L | For Vehicles with Engine Code(s) 9605 |
| 2008 | Porsche | 911 | Carrera 4 Convertible | 3.6L | For Vehicles with Engine Code(s) 9605 |
| 2008 | Porsche | 911 | GT3 RS Coupe | 3.6L | For Vehicles with Engine Code(s) 9605 |
| 2006 | Porsche | 911 | Carrera 4 Convertible | 3.6L | For Vehicles with Engine Code(s) 9605 |
| 2008 | Porsche | 911 | Carrera Convertible | 3.6L | For Vehicles with Engine Code(s) 9605 |
| 2008 | Porsche | 911 | Carrera Coupe | 3.6L | For Vehicles with Engine Code(s) 9605 |
| 2007 | Porsche | 911 | Carrera 4 Coupe | 3.6L | For Vehicles with Engine Code(s) 9605 |
| 2008 | Porsche | 911 | Targa 4 | 3.6L | For Vehicles with Engine Code(s) 9605 |
| 2011 | Porsche | 911 | GT3 Coupe | 3.8L | For Vehicles with Engine Code(s) 9777 |
| 2004 | Porsche | Boxster | Convertible | 2.7L | |
| 2008 | Porsche | Boxster | RS 60 Spyder Convertible | 3.4L | |
| 2008 | Porsche | Cayman | S Hatchback | 3.4L | |
| 2008 | Porsche | Cayman | Hatchback | 2.7L | |
| 2008 | Porsche | Boxster | Convertible | 2.7L | |
| 2007 | Porsche | Cayman | S Hatchback | 3.4L | |
| 2006 | Porsche | Boxster | S Convertible | 3.2L | |
| 2006 | Porsche | Boxster | Convertible | 2.7L | |
| 2007 | Porsche | Boxster | S Convertible | 3.4L | |
| 2006 | Porsche | Cayman | S Hatchback | 3.4L | |
| 2005 | Porsche | Boxster | Convertible | 2.7L | |
| 2003 | Porsche | Boxster | Roadster Convertible | 2.7L | |
| 1998 | Porsche | Boxster | Convertible | 2.5L | |
| 2002 | Porsche | Boxster | Roadster S Convertible | 3.2L | |
| 1997 | Porsche | Boxster | Convertible | 2.5L | |
| 2002 | Porsche | Boxster | Roadster Convertible | 2.7L | |
| 2000 | Porsche | Boxster | Roadster S Convertible | 3.2L | |
| 2001 | Porsche | Boxster | Roadster Convertible | 2.7L | |
| 2000 | Porsche | Boxster | Roadster Convertible | 2.7L | |
| 2001 | Porsche | Boxster | Roadster S Convertible | 3.2L | |
| 2003 | Porsche | Boxster | Roadster S Convertible | 3.2L | |
| 2007 | Porsche | Cayman | Hatchback | 2.7L | |
| 2007 | Porsche | Boxster | Convertible | 2.7L | |
| 2004 | Porsche | Boxster | S Convertible | 3.2L | |
| 2008 | Porsche | Boxster | S Convertible | 3.4L | |
| 2007 | Porsche | 911 | Carrera 4S Coupe | 3.8L | For Vehicles with Engine Code(s) 9701 |
| 2005 | Porsche | 911 | GT3 Coupe | 3.6L | For Vehicles with Engine Code(s) 9605 |
| 2011 | Porsche | 911 | GT3 RS 4.0 Coupe | 4.0L | For Vehicles with Engine Code(s) 9774 |
| 2006 | Porsche | 911 | Carrera S Coupe | 3.8L | For Vehicles with Engine Code(s) 9701 |
| 2005 | Porsche | 911 | Turbo Convertible | 3.6L Turbo | For Vehicles with Engine Code(s) 9605 |
| 2007 | Porsche | 911 | GT3 Coupe | 3.6L | For Vehicles with Engine Code(s) 9605 |
| 2006 | Porsche | 911 | Carrera 4S Convertible | 3.8L | For Vehicles with Engine Code(s) 9701 |
| 2006 | Porsche | 911 | Carrera 4S Coupe | 3.8L | For Vehicles with Engine Code(s) 9701 |
| 2005 | Porsche | 911 | Carrera Convertible | 3.6L | For Vehicles with Engine Code(s) 9605 |
| 2005 | Porsche | 911 | Carrera Coupe | 3.6L | For Vehicles with Engine Code(s) 9605 |
| 2007 | Porsche | 911 | Carrera 4S Convertible | 3.8L | For Vehicles with Engine Code(s) 9701 |
| 2008 | Porsche | 911 | Carrera S Coupe | 3.8L | For Vehicles with Engine Code(s) 9701 |
| 2005 | Porsche | Boxster | S Convertible | 3.2L | |
| 2005 | Porsche | 911 | Carrera S Convertible | 3.8L | For Vehicles with Engine Code(s) 9701 |