DNJ
DNJ Cylinder Head Gasket 1999-2004 Toyota 3.4L
DNJ Cylinder Head Gasket 1999-2004 Toyota 3.4L
Part number: HG966L
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Listed for: 1999–2004 ToyotaFitment notes & questions
Cylinder Head Gasket by DNJ for 1999–2004 Toyota 3 with the 3.4L engine. The head gasket seals the cylinder head to the block, keeping combustion pressure in the cylinders and coolant and oil in their own passages.
Quick facts
- Brand: DNJ
- Part type: Head gasket
- Listed for: 1999–2004 Toyota 3
- Engine: 3.4L
- Engine code: 5VZ-FE 24V DOHC
- Part number: HG966L
Listed fitment
- [1999-2004] TOYOTA [Graphite Gasket] / V6 / 3.4L DOHC 24V [(5VZFE)]
Good to know
- Notes: Left, Graphite Gasket
- Warranty terms: 12 month or 12,000 mile warranty whichever comes first. Warranty must be requested by the original purchaser and is limited to the replacement of the alleged defective part(s) only.
Tip: Most head gaskets call for new head bolts and a flat, clean deck surface. Check the head and block before you reassemble.

DNJ head gasket for the Toyota: what to know
A failed head gasket can mix coolant and oil, push coolant out of the system or cause overheating, so it is a job worth doing once and doing right.
Fitment notes
- Listed for: 1999–2004 Toyota.
- Model years: 1999–2004. Parts can change mid-generation, so match the exact year.
- Engine: match the engine size and code to your vehicle; the same model often came with several engines.
- Specs, lead time and warranty come from DNJ and can change. The details above this guide are the latest we have.
Not sure it fits? Tell us exactly what you drive and we'll confirm fitment first. It's free and saves a return.
Ask about fitmentWhat else to plan for
- Head bolts. Many engines use torque-to-yield head bolts that should not be reused.
- Coolant. Refill with the coolant type your engine calls for.
- Valve cover and intake gaskets. They come off during the job, so it is the time to replace them.
More for your car: Head Gaskets · Toyota Parts · All Head Gaskets · Engine
Questions about Toyota head gasket
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Questions & answers
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