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Honda Thermostat Bolt
Part Number: 90051-PNA-000

★★★★★ ★★★★★ 3 Reviews
Images may be for reference only

Honda Thermostat Bolt
Part Number: 90051-PNA-000

★★★★★ ★★★★★ 3 Reviews
$3.80

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Available to Order
Estimated to ship in 1–2 business days

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

Acura ILX
2013 Acura ILX Base
2014 Acura ILX Base
2015 Acura ILX Base
Acura RSX
2002 Acura RSX Base
2003 Acura RSX Base
2004 Acura RSX Base
2005 Acura RSX Base
2006 Acura RSX Base
2002 Acura RSX Type-S
2003 Acura RSX Type-S
2004 Acura RSX Type-S
2005 Acura RSX Type-S
2006 Acura RSX Type-S
Acura TSX
2004 Acura TSX Base
2005 Acura TSX Base
2006 Acura TSX Base
2007 Acura TSX Base
2008 Acura TSX Base
2009 Acura TSX Base
2010 Acura TSX Base
2011 Acura TSX Base
2012 Acura TSX Base
2013 Acura TSX Base
2014 Acura TSX Base
2012 Acura TSX Special Edition
2013 Acura TSX Special Edition
2014 Acura TSX Special Edition
Honda Accord
2003 Honda Accord DX
2004 Honda Accord DX
2005 Honda Accord DX
2003 Honda Accord EX
2004 Honda Accord EX
2005 Honda Accord EX
2006 Honda Accord EX
2007 Honda Accord EX
2008 Honda Accord EX
2009 Honda Accord EX
2010 Honda Accord EX
2011 Honda Accord EX
2012 Honda Accord EX
2007 Honda Accord EX-L
2008 Honda Accord EX-L
2009 Honda Accord EX-L
2010 Honda Accord EX-L
2011 Honda Accord EX-L
2012 Honda Accord EX-L
2003 Honda Accord LX
2004 Honda Accord LX
2005 Honda Accord LX
2006 Honda Accord LX
2007 Honda Accord LX
2008 Honda Accord LX
2009 Honda Accord LX
2010 Honda Accord LX
2011 Honda Accord LX
2012 Honda Accord LX
2006 Honda Accord LX Special Edition
2008 Honda Accord LX-P
2009 Honda Accord LX-P
2010 Honda Accord LX-P
2011 Honda Accord LX-P
2012 Honda Accord LX-P
2009 Honda Accord LX-S
2010 Honda Accord LX-S
2011 Honda Accord LX-S
2012 Honda Accord LX-S
2005 Honda Accord SE
2011 Honda Accord SE
2012 Honda Accord SE
2007 Honda Accord Special Edition
2006 Honda Accord Value Package
2007 Honda Accord Value Package
Honda CR-V
2002 Honda CR-V EX
2003 Honda CR-V EX
2004 Honda CR-V EX
2005 Honda CR-V EX
2006 Honda CR-V EX
2007 Honda CR-V EX
2008 Honda CR-V EX
2009 Honda CR-V EX
2010 Honda CR-V EX
2011 Honda CR-V EX
2012 Honda CR-V EX
2013 Honda CR-V EX
2014 Honda CR-V EX
2007 Honda CR-V EX-L
2008 Honda CR-V EX-L
2009 Honda CR-V EX-L
2010 Honda CR-V EX-L
2011 Honda CR-V EX-L
2012 Honda CR-V EX-L
2013 Honda CR-V EX-L
2014 Honda CR-V EX-L
2002 Honda CR-V LX
2003 Honda CR-V LX
2004 Honda CR-V LX
2005 Honda CR-V LX
2006 Honda CR-V LX
2007 Honda CR-V LX
2008 Honda CR-V LX
2009 Honda CR-V LX
2010 Honda CR-V LX
2011 Honda CR-V LX
2012 Honda CR-V LX
2013 Honda CR-V LX
2014 Honda CR-V LX
2005 Honda CR-V SE
2006 Honda CR-V SE
2011 Honda CR-V SE
Honda CR-Z
2011 Honda CR-Z Base
2012 Honda CR-Z Base
2013 Honda CR-Z Base
2014 Honda CR-Z Base
2015 Honda CR-Z Base
2011 Honda CR-Z EX
2012 Honda CR-Z EX
2013 Honda CR-Z EX
2014 Honda CR-Z EX
2015 Honda CR-Z EX
2016 Honda CR-Z EX
2016 Honda CR-Z EX-L
2016 Honda CR-Z LX
Honda Civic
2008 Honda Civic MUGEN Si
2002 Honda Civic Si
2003 Honda Civic Si
2004 Honda Civic Si
2005 Honda Civic Si
2006 Honda Civic Si
2007 Honda Civic Si
2008 Honda Civic Si
2009 Honda Civic Si
2010 Honda Civic Si
2011 Honda Civic Si
2012 Honda Civic Si
2013 Honda Civic Si
2014 Honda Civic Si
2015 Honda Civic Si
Honda Crosstour
2012 Honda Crosstour EX
2013 Honda Crosstour EX
2014 Honda Crosstour EX
2015 Honda Crosstour EX
2012 Honda Crosstour EX-L
2013 Honda Crosstour EX-L
2014 Honda Crosstour EX-L
2015 Honda Crosstour EX-L
Honda Element
2003 Honda Element DX
2004 Honda Element DX
2003 Honda Element EX
2004 Honda Element EX
2005 Honda Element EX
2006 Honda Element EX
2007 Honda Element EX
2008 Honda Element EX
2009 Honda Element EX
2010 Honda Element EX
2011 Honda Element EX
2004 Honda Element LX
2005 Honda Element LX
2006 Honda Element LX
2007 Honda Element LX
2008 Honda Element LX
2009 Honda Element LX
2010 Honda Element LX
2011 Honda Element LX
2007 Honda Element SC
2008 Honda Element SC
2009 Honda Element SC
2010 Honda Element SC
Honda Fit
2009 Honda Fit Base
2010 Honda Fit Base
2011 Honda Fit Base
2012 Honda Fit Base
2013 Honda Fit Base
2009 Honda Fit Sport
2010 Honda Fit Sport
2011 Honda Fit Sport
2012 Honda Fit Sport
2013 Honda Fit Sport
Honda Insight
2011 Honda Insight Base
2012 Honda Insight Base
2013 Honda Insight Base
2014 Honda Insight Base
2011 Honda Insight EX
2012 Honda Insight EX
2013 Honda Insight EX
2014 Honda Insight EX
2010 Honda Insight LX
2011 Honda Insight LX
2012 Honda Insight LX
2013 Honda Insight LX
2014 Honda Insight LX

3 Reviews ★★★★★ ★★★★★

★★★★★ ★★★★★
5/5.00 Stars out of 3 Reviews
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Verified Buyer
Boss
JUSTIN | March 19th, 2026
The best bolt ever
Verified Buyer
Oem Honda genuine parts
David Horvitz | April 19th, 2025
Oem Honda genuine parts And shipping is pretty decent also will buy again for sure
Verified Buyer
Right parts, prompt shipping
Ian | June 24th, 2024
Parts fit my 08 CRV, all arrived on time