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Product Details
| Part Number: | 90051-PNA-000 |
| Brand: | Honda |
Complete your cooling system service with the correct factory hardware using the Genuine Honda 90051-PNA-000 Thermostat Housing Mounting Bolt. This OEM Honda special bolt is designed for securing the thermostat housing/thermostat case on a wide range of Honda and Acura applications, including many popular K-Series and L-Series engines.
Manufactured to Honda's original specifications, 90051-PNA-000 is an M6 x 28mm special bolt with the factory-correct dimensions and thread configuration. Using the proper OEM bolt is especially important when fastening components into aluminum housings, where incorrect bolt length or thread engagement can lead to damaged threads or improper component seating.
This is an excellent replacement when servicing a thermostat, water pump, thermostat housing, or rebuilding a K-Series cooling system where the original hardware is missing, damaged, or corroded.
Features
- Genuine Honda OEM replacement part
- Honda Part Number: 90051-PNA-000
- OEM Description: Bolt, Special (6x28)
- M6 x 28mm factory-specification bolt
- Commonly used as a thermostat housing mounting bolt
- Secures the thermostat case/housing in applicable Honda and Acura engines
- Factory-correct size and thread configuration
- Direct replacement for the original Honda hardware
- Ideal for replacing lost, damaged, or corroded thermostat hardware
- Suitable for many popular Honda K-Series and L-Series engines
- Manufactured to Honda OEM specifications
- Helps ensure proper thermostat housing positioning and clamping
- Ideal for cooling-system repairs and engine rebuilds
- Sold individually
- Some thermostat assemblies require 3 bolts; verify the required quantity for your application
Common Applications
- 2002–2006 Acura RSX Base & Type-S
- 2004–2014 Acura TSX
- 2013–2015 Acura ILX 2.4L
- 2003–2012 Honda Accord
- 2002–2015 Honda Civic Si
- 2002–2014 Honda CR-V
- 2011–2016 Honda CR-Z
- 2003–2011 Honda Element
- 2009–2014 Honda Fit
- 2010–2014 Honda Insight
- 2012–2015 Honda Crosstour
Specifications
- Manufacturer: Honda
- Part Number: 90051-PNA-000
- Description: Special Bolt
- Size: M6 x 28mm
- Application: Thermostat Housing / Thermostat Case
- Fitment Type: Direct OEM Replacement
- Quantity: 1
- Condition: New Genuine Honda Part
Fitment Note:
- 90051-PNA-000 is sold individually. K Series Parts specifically identifies it as the genuine Honda bolt used to secure the thermostat case to the water pump and notes that three are required for that application. Exact usage and quantity can vary by engine and vehicle, so confirm the OEM part number for your specific application before ordering.
WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects. www.P65Warnings.ca.gov.
Vehicle Fitment
| Year | Make | Model | Trim |
|---|---|---|---|
| 2002 | Acura | RSX | Base |
| 2002 | Acura | RSX | Type-S |
| 2002 | Honda | CR-V | EX |
| 2002 | Honda | CR-V | LX |
| 2002 | Honda | Civic | Si |
| 2003 | Acura | RSX | Base |
| 2003 | Acura | RSX | Type-S |
| 2003 | Honda | Accord | DX |
| 2003 | Honda | Accord | EX |
| 2003 | Honda | Accord | LX |
| 2003 | Honda | CR-V | EX |
| 2003 | Honda | CR-V | LX |
| 2003 | Honda | Civic | Si |
| 2003 | Honda | Element | DX |
| 2003 | Honda | Element | EX |
| 2004 | Acura | RSX | Base |
| 2004 | Acura | RSX | Type-S |
| 2004 | Acura | TSX | Base |
| 2004 | Honda | Accord | DX |
| 2004 | Honda | Accord | EX |
| 2004 | Honda | Accord | LX |
| 2004 | Honda | CR-V | EX |
| 2004 | Honda | CR-V | LX |
| 2004 | Honda | Civic | Si |
| 2004 | Honda | Element | DX |
| 2004 | Honda | Element | EX |
| 2004 | Honda | Element | LX |
| 2005 | Acura | RSX | Base |
| 2005 | Acura | RSX | Type-S |
| 2005 | Acura | TSX | Base |
| 2005 | Honda | Accord | DX |
| 2005 | Honda | Accord | EX |
| 2005 | Honda | Accord | LX |
| 2005 | Honda | Accord | SE |
| 2005 | Honda | CR-V | EX |
| 2005 | Honda | CR-V | LX |
| 2005 | Honda | CR-V | SE |
| 2005 | Honda | Civic | Si |
| 2005 | Honda | Element | EX |
| 2005 | Honda | Element | LX |
| 2006 | Acura | RSX | Base |
| 2006 | Acura | RSX | Type-S |
| 2006 | Acura | TSX | Base |
| 2006 | Honda | Accord | EX |
| 2006 | Honda | Accord | LX |
| 2006 | Honda | Accord | LX Special Edition |
| 2006 | Honda | Accord | Value Package |
| 2006 | Honda | CR-V | EX |
| 2006 | Honda | CR-V | LX |
| 2006 | Honda | CR-V | SE |
| 2006 | Honda | Civic | Si |
| 2006 | Honda | Element | EX |
| 2006 | Honda | Element | LX |
| 2007 | Acura | TSX | Base |
| 2007 | Honda | Accord | EX |
| 2007 | Honda | Accord | EX-L |
| 2007 | Honda | Accord | LX |
| 2007 | Honda | Accord | Special Edition |
| 2007 | Honda | Accord | Value Package |
| 2007 | Honda | CR-V | EX |
| 2007 | Honda | CR-V | EX-L |
| 2007 | Honda | CR-V | LX |
| 2007 | Honda | Civic | Si |
| 2007 | Honda | Element | EX |
| 2007 | Honda | Element | LX |
| 2007 | Honda | Element | SC |
| 2008 | Acura | TSX | Base |
| 2008 | Honda | Accord | EX |
| 2008 | Honda | Accord | EX-L |
| 2008 | Honda | Accord | LX |
| 2008 | Honda | Accord | LX-P |
| 2008 | Honda | CR-V | EX |
| 2008 | Honda | CR-V | EX-L |
| 2008 | Honda | CR-V | LX |
| 2008 | Honda | Civic | MUGEN Si |
| 2008 | Honda | Civic | Si |
| 2008 | Honda | Element | EX |
| 2008 | Honda | Element | LX |
| 2008 | Honda | Element | SC |
| 2009 | Acura | TSX | Base |
| 2009 | Honda | Accord | EX |
| 2009 | Honda | Accord | EX-L |
| 2009 | Honda | Accord | LX |
| 2009 | Honda | Accord | LX-P |
| 2009 | Honda | Accord | LX-S |
| 2009 | Honda | CR-V | EX |
| 2009 | Honda | CR-V | EX-L |
| 2009 | Honda | CR-V | LX |
| 2009 | Honda | Civic | Si |
| 2009 | Honda | Element | EX |
| 2009 | Honda | Element | LX |
| 2009 | Honda | Element | SC |
| 2009 | Honda | Fit | Base |
| 2009 | Honda | Fit | Sport |
| 2010 | Acura | TSX | Base |
| 2010 | Honda | Accord | EX |
| 2010 | Honda | Accord | EX-L |
| 2010 | Honda | Accord | LX |
| 2010 | Honda | Accord | LX-P |
| 2010 | Honda | Accord | LX-S |
| 2010 | Honda | CR-V | EX |
| 2010 | Honda | CR-V | EX-L |
| 2010 | Honda | CR-V | LX |
| 2010 | Honda | Civic | Si |
| 2010 | Honda | Element | EX |
| 2010 | Honda | Element | LX |
| 2010 | Honda | Element | SC |
| 2010 | Honda | Fit | Base |
| 2010 | Honda | Fit | Sport |
| 2010 | Honda | Insight | LX |
| 2011 | Acura | TSX | Base |
| 2011 | Honda | Accord | EX |
| 2011 | Honda | Accord | EX-L |
| 2011 | Honda | Accord | LX |
| 2011 | Honda | Accord | LX-P |
| 2011 | Honda | Accord | LX-S |
| 2011 | Honda | Accord | SE |
| 2011 | Honda | CR-V | EX |
| 2011 | Honda | CR-V | EX-L |
| 2011 | Honda | CR-V | LX |
| 2011 | Honda | CR-V | SE |
| 2011 | Honda | CR-Z | Base |
| 2011 | Honda | CR-Z | EX |
| 2011 | Honda | Civic | Si |
| 2011 | Honda | Element | EX |
| 2011 | Honda | Element | LX |
| 2011 | Honda | Fit | Base |
| 2011 | Honda | Fit | Sport |
| 2011 | Honda | Insight | Base |
| 2011 | Honda | Insight | EX |
| 2011 | Honda | Insight | LX |
| 2012 | Acura | TSX | Base |
| 2012 | Acura | TSX | Special Edition |
| 2012 | Honda | Accord | EX |
| 2012 | Honda | Accord | EX-L |
| 2012 | Honda | Accord | LX |
| 2012 | Honda | Accord | LX-P |
| 2012 | Honda | Accord | LX-S |
| 2012 | Honda | Accord | SE |
| 2012 | Honda | CR-V | EX |
| 2012 | Honda | CR-V | EX-L |
| 2012 | Honda | CR-V | LX |
| 2012 | Honda | CR-Z | Base |
| 2012 | Honda | CR-Z | EX |
| 2012 | Honda | Civic | Si |
| 2012 | Honda | Crosstour | EX |
| 2012 | Honda | Crosstour | EX-L |
| 2012 | Honda | Fit | Base |
| 2012 | Honda | Fit | Sport |
| 2012 | Honda | Insight | Base |
| 2012 | Honda | Insight | EX |
| 2012 | Honda | Insight | LX |
| 2013 | Acura | ILX | Base |
| 2013 | Acura | TSX | Base |
| 2013 | Acura | TSX | Special Edition |
| 2013 | Honda | CR-V | EX |
| 2013 | Honda | CR-V | EX-L |
| 2013 | Honda | CR-V | LX |
| 2013 | Honda | CR-Z | Base |
| 2013 | Honda | CR-Z | EX |
| 2013 | Honda | Civic | Si |
| 2013 | Honda | Crosstour | EX |
| 2013 | Honda | Crosstour | EX-L |
| 2013 | Honda | Fit | Base |
| 2013 | Honda | Fit | Sport |
| 2013 | Honda | Insight | Base |
| 2013 | Honda | Insight | EX |
| 2013 | Honda | Insight | LX |
| 2014 | Acura | ILX | Base |
| 2014 | Acura | TSX | Base |
| 2014 | Acura | TSX | Special Edition |
| 2014 | Honda | CR-V | EX |
| 2014 | Honda | CR-V | EX-L |
| 2014 | Honda | CR-V | LX |
| 2014 | Honda | CR-Z | Base |
| 2014 | Honda | CR-Z | EX |
| 2014 | Honda | Civic | Si |
| 2014 | Honda | Crosstour | EX |
| 2014 | Honda | Crosstour | EX-L |
| 2014 | Honda | Insight | Base |
| 2014 | Honda | Insight | EX |
| 2014 | Honda | Insight | LX |
| 2015 | Acura | ILX | Base |
| 2015 | Honda | CR-Z | Base |
| 2015 | Honda | CR-Z | EX |
| 2015 | Honda | Civic | Si |
| 2015 | Honda | Crosstour | EX |
| 2015 | Honda | Crosstour | EX-L |
| 2016 | Honda | CR-Z | EX |
| 2016 | Honda | CR-Z | EX-L |
| 2016 | Honda | CR-Z | LX |
3 Reviews ★★★★★
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JUSTIN | March 19th, 2026
The best bolt ever
David Horvitz | April 19th, 2025
Oem Honda genuine parts And shipping is pretty decent also will buy again for sure
Ian | June 24th, 2024
Parts fit my 08 CRV, all arrived on time
