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Apex AHB551 Engine Cylinder Head Bolt Set
Apex AHB551 Cylinder Head Bolt Set
Apex AHB551 is an engine cylinder head bolt set for Nissan, INFINITI, and Suzuki applications that require direct-fit cylinder head fasteners. Use it when servicing the top end of the engine on vehicles such as the Nissan Armada, Titan, Frontier, Pathfinder, Altima, Sentra, NV2500, and NV3500, as well as the INFINITI QX56 and Suzuki Equator.
Key Features
- Engine cylinder head bolt set for head service and rebuild work
- Direct fit for select 2002-2017 Nissan, INFINITI, and Suzuki vehicles
- Fits 2002-2006 Nissan Altima, N/A
- Fits 2002-2006 Nissan Sentra, N/A
- Fits 2004-2015 Nissan Armada, N/A
- Fits 2004-2015 Nissan TITAN, N/A
- Fits 2005-2013 Nissan Frontier, N/A
- Fits 2008-2012 Nissan Pathfinder, N/A
- Fits 2014-2015 Nissan Pathfinder, N/A
- Fits 2012-2017 Nissan NV2500, N/A
- Fits 2012-2017 Nissan NV3500, N/A
- Fits 2004-2010 INFINITI QX56, N/A
- Fits 2009-2012 Suzuki Equator, N/A
Detailed Description
The Apex AHB551 cylinder head bolt set is built for engine repair jobs that require replacement head fasteners during cylinder head removal and reassembly. It is a fitment-based solution for a wide range of Nissan V8 and V6 platforms, including the Armada, TITAN, Frontier, Pathfinder, NV2500, NV3500, Altima, Sentra, INFINITI QX56, and Suzuki Equator. If you are searching for Apex AHB551 cylinder head bolts for Nissan Armada or Apex AHB551 for Nissan TITAN engine service, this part number matches the listed applications.
This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.
Common Repair Uses
- Replacing stretched or damaged cylinder head bolts during engine teardown
- Restoring proper clamping force after head gasket service
- Addressing head sealing issues caused by worn fasteners
- Supporting cylinder head reinstallation after machine work
- Completing engine rebuild or top-end repair procedures
Installation Notes
Verify engine code and exact vehicle application before installation. Clean the cylinder head and block mating surfaces, follow the factory tightening sequence, and use the torque procedure specified for the engine. For search accuracy, this part is commonly referenced as Apex AHB551 cylinder head bolt set for Nissan Pathfinder, Nissan Frontier, and INFINITI QX56 applications.
Quality Assurance
Built under the Apex brand for engine hardware replacement applications, this part is listed for the confirmed vehicle coverage shown above.
This part fits 73 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2017 | Nissan | NV2500 | 5.6L | V8 | N/A | |
| 2017 | Nissan | NV3500 | 5.6L | V8 | N/A | |
| 2016 | Nissan | NV2500 | 5.6L | V8 | N/A | |
| 2016 | Nissan | NV3500 | 5.6L | V8 | N/A | |
| 2015 | Nissan | Armada | 5.6L | V8 | N/A | |
| 2015 | Nissan | NV2500 | 5.6L | V8 | N/A | |
| 2015 | Nissan | NV3500 | 5.6L | V8 | N/A | |
| 2015 | Nissan | Pathfinder | 2.5L | L4 | N/A | |
| 2015 | Nissan | TITAN | 5.6L | V8 | N/A | |
| 2014 | Nissan | Armada | 5.6L | V8 | N/A | |
| 2014 | Nissan | NV2500 | 5.6L | V8 | N/A | |
| 2014 | Nissan | NV3500 | 5.6L | V8 | N/A | |
| 2014 | Nissan | Pathfinder | 2.5L | L4 | N/A | |
| 2014 | Nissan | TITAN | 5.6L | V8 | N/A | |
| 2013 | Nissan | Armada | 5.6L | V8 | N/A | |
| 2013 | Nissan | Frontier | 2.5L | L4 | N/A | |
| 2013 | Nissan | NV2500 | 5.6L | V8 | N/A | |
| 2013 | Nissan | NV3500 | 5.6L | V8 | N/A | |
| 2013 | Nissan | TITAN | 5.6L | V8 | N/A | |
| 2012 | Nissan | Armada | 5.6L | V8 | N/A | |
| 2012 | Nissan | Frontier | 2.5L | L4 | N/A | |
| 2012 | Nissan | NV2500 | 5.6L | V8 | N/A | |
| 2012 | Nissan | NV3500 | 5.6L | V8 | N/A | |
| 2012 | Nissan | Pathfinder | 5.6L | V8 | N/A | |
| 2012 | Nissan | TITAN | 5.6L | V8 | N/A | |
| 2012 | Suzuki | Equator | 2.5L | L4 | N/A | |
| 2011 | Nissan | Armada | 5.6L | V8 | N/A | |
| 2011 | Nissan | Frontier | 2.5L | L4 | N/A | |
| 2011 | Nissan | Pathfinder | 5.6L | V8 | N/A | |
| 2011 | Nissan | TITAN | 5.6L | V8 | N/A | |
| 2011 | Suzuki | Equator | 2.5L | L4 | N/A | |
| 2010 | INFINITI | QX56 | 5.6L | V8 | N/A | |
| 2010 | Nissan | Armada | 5.6L | V8 | N/A | |
| 2010 | Nissan | Frontier | 2.5L | L4 | N/A | |
| 2010 | Nissan | Pathfinder | 5.6L | V8 | N/A | |
| 2010 | Nissan | TITAN | 5.6L | V8 | N/A | |
| 2010 | Suzuki | Equator | 2.5L | L4 | N/A | |
| 2009 | INFINITI | QX56 | 5.6L | V8 | N/A | |
| 2009 | Nissan | Armada | 5.6L | V8 | N/A | |
| 2009 | Nissan | Frontier | 2.5L | L4 | N/A | |
| 2009 | Nissan | Pathfinder | 5.6L | V8 | N/A | |
| 2009 | Nissan | TITAN | 5.6L | V8 | N/A | |
| 2009 | Suzuki | Equator | 2.5L | L4 | N/A | |
| 2008 | INFINITI | QX56 | 5.6L | V8 | N/A | |
| 2008 | Nissan | Armada | 5.6L | V8 | N/A | |
| 2008 | Nissan | Frontier | 2.5L | L4 | N/A | |
| 2008 | Nissan | Pathfinder | 5.6L | V8 | N/A | |
| 2008 | Nissan | TITAN | 5.6L | V8 | N/A | |
| 2007 | INFINITI | QX56 | 5.6L | V8 | N/A | |
| 2007 | Nissan | Armada | 5.6L | V8 | N/A | |
| 2007 | Nissan | Frontier | 2.5L | L4 | N/A | |
| 2007 | Nissan | TITAN | 5.6L | V8 | N/A | |
| 2006 | INFINITI | QX56 | 5.6L | V8 | N/A | |
| 2006 | Nissan | Altima | 2.5L | L4 | N/A | |
| 2006 | Nissan | Armada | 5.6L | V8 | N/A | |
| 2006 | Nissan | Frontier | 2.5L | L4 | N/A | |
| 2006 | Nissan | Sentra | 2.5L | L4 | N/A | |
| 2006 | Nissan | TITAN | 5.6L | V8 | N/A | |
| 2005 | INFINITI | QX56 | 5.6L | V8 | N/A | |
| 2005 | Nissan | Altima | 2.5L | L4 | N/A | |
| 2005 | Nissan | Armada | 5.6L | V8 | N/A | |
| 2005 | Nissan | Frontier | 2.5L | L4 | N/A | |
| 2005 | Nissan | Sentra | 2.5L | L4 | N/A | |
| 2005 | Nissan | TITAN | 5.6L | V8 | N/A | |
| 2004 | INFINITI | QX56 | 5.6L | V8 | N/A | |
| 2004 | Nissan | Altima | 2.5L | L4 | N/A | |
| 2004 | Nissan | Pathfinder Armada | 5.6L | V8 | N/A | |
| 2004 | Nissan | Sentra | 2.5L | L4 | N/A | |
| 2004 | Nissan | TITAN | 5.6L | V8 | N/A | |
| 2003 | Nissan | Altima | 2.5L | L4 | N/A | |
| 2003 | Nissan | Sentra | 2.5L | L4 | N/A | |
| 2002 | Nissan | Altima | 2.5L | L4 | N/A | |
| 2002 | Nissan | Sentra | 2.5L | L4 | N/A |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.