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Honda 10004-RDA-305 General, Front Cylinder Head

2005-2006 Honda 10004RDA305

Customer Questions & Expert Answers (6)
10004-RDA-305 Honda General, Front Cylinder Head Illustration 1 of 1
10004-RDA-305 Honda General, Front Cylinder Head Illustration 1 of 1
  • Part Description
    General, Front Cylinder Head
  • Position
    Front
  • Replaces
    10004-RDJ-A01, 10004-RDJ-J00, 10004-RJE-A00, 10004-RDA-A00, 10004-RDJ-A00, 10004-RDJ-X00, 10004-PVJ-A00, 10004-RDA-A10
  • Manufacturer
    Honda
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Specifications
  • Fitment
  • Q&A

  • 10004-RDA-305 General, Front Cylinder Head is Ref No. 2 in the diagram below

    2006 Honda Ridgeline General, Front Cylinder Head Diagram for 10004-RDA-305
    The diagram listed above is for your reference. View diagram for your vehicle

    Related Parts

  • Product Specifications

    BrandGenuine Honda
    Manufacturer Part Number10004-RDA-305
    Part DescriptionGeneral, Front Cylinder Head
    Item Dimensions26.0 x 14.3 x 12.5 inches
    Item Weight143.60 Pounds
    PositionFront
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces10004-RDJ-A01, 10004-RDJ-J00, 10004-RJE-A00, 10004-RDA-A00, 10004-RDJ-A00, 10004-RDJ-X00, 10004-PVJ-A00, 10004-RDA-A10
    ManufacturerHonda
    SKU10004-RDA-305
    WarrantyThis genuine Honda part is guaranteed by Honda's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California's Proposition 65

  • Vehicle Fitment

    Year Make Model Body & Trim Emission & Transmission
    2005 Honda Pilot5 Door EX, 5 Door EX-L, 5 Door LXKA 5AT
    2006 Honda Ridgeline4 Door RT, 4 Door RTL, 4 Door RTSKA 5AT

  • Customer Questions & Expert Answers

    Q:
    Does this fit my car?
    A:
    You can Select Your Vehicle to check if 10004-RDA-305 fits your vehicle.
    Posted and answered by Honda Parts Specialist Marc
    Q:
    How should the mating surfaces of the Cylinder Heads and block be prepared for the 2005 Honda Pilot? Posted by Erica A.
    A:
    The mating surfaces of the cylinder heads and block should be cleaned thoroughly to ensure a proper seal when reinstalling. It is also important to check for damage on the mating surfaces, chase the threads in the head bolt holes, and clean the oil-control orifices. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by Honda Parts Specialist Jeremie / Oct 08, 2025
    Q:
    What are the final steps after installing the Cylinder Head for the 2006 Honda Ridgeline? Posted by Yanerys T.
    A:
    The final steps include completing the remaining installation steps, reconnecting the battery, refilling the cooling system, changing the oil and filter, and running the engine to check for leaks and proper operation. It is also important to note any potential tappet noise during initial operation, as it may signal an issue with the lost motion assemblies. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by Honda Parts Specialist Lawrence / Aug 04, 2022
    Q:
    Why Cylinder head for Ridgeline 2006 (10004-RDA-305) is it not compatible with 2008 Honda Ridgeline (12100-RDJ-305)? What is the difference ? Posted by Yasen N. / 2008 Honda Ridgeline
    A:
    10004-RDA-305 cylinder head assembly is for 2006 Ridgeline with engine serial numbers up to 1031970 10004-RDJ-J01 cylinder head assembly is for 2006-2008 Ridgeline with engine serial number 1031971 and up. 12100-RDJ-305 is the BARE cylinder head without valve train that fits 2006-2008 Ridgeline.
    Answered by Honda Parts Specialist Emanuel / Mar 17, 2022
    Q:
    Why is it not compatible with 2008 Honda Ridgeline ? Their engines are the same. Posted by Yasen N. / 2008 Honda Ridgeline
    A:
    It is the same base engine in that 2006 ridgeline, however there are small variances. If the front cylinder head assembly is what they were looking for the part number would be, 10004-RDJ-J01.
    Answered by Honda Parts Specialist Dan / Mar 17, 2022
    Q:
    Will this Head Work For My 2009 Ridgeline Posted by Gilbert B. / 2009 Honda Ridgeline
    A:
    No, that part is for a 2006 Ridgeline ONLY
    Answered by Honda Parts Specialist Jacob / Jan 19, 2022

Genuine Honda Part 10004-RDA-305, the Right Choice

To ensure reliability, purchase Honda part # 10004-RDA-305 General, Front Cylinder Head. It is sometimes referred to as Honda Cylinder Head. In terms of quality, OEM parts are the wise choice for Honda owners who want to keep their vehicles at peak performance. They are manufactured to follow official strict factory specifications and are made in world-class facilities. They undergo rigorous tests to ensure that they are durable and safe to use. This part fits 2005 Honda Pilot, 2006 Honda Ridgeline.

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