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Make sure this part fits

Honda 12300-RDJ-305 Cylinder Head Assembly, Rear

2005-2010 Honda 12300RDJ305

Customer Questions & Expert Answers (3)
12300-RDJ-305 Honda Cylinder Head Assembly, Rear Product Photo 1 of 4
12300-RDJ-305 Honda Cylinder Head Assembly, Rear Product Photo 1 of 4
12300-RDJ-305 Honda Cylinder Head Assembly, Rear Product Photo 2 of 4
12300-RDJ-305 Honda Cylinder Head Assembly, Rear Product Photo 3 of 4
12300-RDJ-305 Honda Cylinder Head Assembly, Rear Product Photo 4 of 4
12300-RDJ-305 Honda Cylinder Head Assembly, Rear Illustration 1 of 1
  • Part Description
    Cylinder Head
  • Position
    Rear
  • Replaces
    12300-RDJ-810, 12300-PVJ-810
  • Manufacturer
    Honda
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Specifications
  • Fitment
  • Q&A

  • 12300-RDJ-305 Cylinder Head Assembly, Rear is Ref No. 7 in the diagram below

    2007 Honda Ridgeline Cylinder Head Assembly, Rear Diagram for 12300-RDJ-305
    The diagram listed above is for your reference. View diagram for your vehicle

    Related Parts

  • Product Specifications

    BrandGenuine Honda
    Manufacturer Part Number12300-RDJ-305
    Part DescriptionCylinder Head
    Item Dimensions25.3 x 14.5 x 13.0 inches
    Item Weight28.40 Pounds
    PositionRear
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces12300-RDJ-810, 12300-PVJ-810
    ManufacturerHonda
    SKU12300-RDJ-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
    2010 Honda Odyssey5 Door EX, 5 Door LXKA 5AT
    2009 Honda Odyssey5 Door EX, 5 Door LXKA 5AT
    2008 Honda Odyssey5 Door EX, 5 Door LXKA 5AT
    2007 Honda Odyssey5 Door EX, 5 Door LXKA 5AT
    2008 Honda Pilot5 Door EX (4WD), 5 Door EX-L (4WD), 5 Door EX-SE (4WD), 5 Door LX-VP (4WD)KA 5AT
    2007 Honda Pilot5 Door EX (4WD), 5 Door EX-L (4WD), 5 Door LX (4WD)KA 5AT
    2006 Honda Pilot5 Door EX (4WD), 5 Door EX-L (4WD), 5 Door LX (4WD)KA 5AT
    2005 Honda Pilot5 Door EX, 5 Door EX-L, 5 Door LXKA 5AT
    2008 Honda Ridgeline4 Door RT, 4 Door RTL, 4 Door RTS, 4 Door RTXKA 5AT
    2007 Honda Ridgeline4 Door RT, 4 Door RTL, 4 Door RTS, 4 Door RTXKA 5AT
    View More

  • Customer Questions & Expert Answers

    Q:
    Does this fit my car?
    A:
    You can Select Your Vehicle to check if 12300-RDJ-305 fits your vehicle.
    Posted and answered by Honda Parts Specialist Marc
    Q:
    What should be done with the Cylinder Head bolts for the 2005 Honda Pilot? Posted by Eunae S.
    A:
    The cylinder head bolts should be loosened and discarded. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by Honda Parts Specialist Eric / Dec 13, 2025
    Q:
    How should the mating surfaces of the Cylinder Heads and block be prepared for the 2008 Honda Ridgeline? Posted by Monette B.
    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 Jacob / Mar 02, 2023

Genuine Honda Part 12300-RDJ-305, the Right Choice

To ensure reliability, purchase Honda part # 12300-RDJ-305 Cylinder Head Assembly, Rear. 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 2007-2010 Honda Odyssey, 2005-2008 Honda Pilot, 2006-2008 Honda Ridgeline.

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