DNJ
DNJ 2003 Chevrolet Avalanche 2500 8.1L Intake Valve
DNJ 2003 Chevrolet Avalanche 2500 8.1L Intake Valve
Part number: IV3181_21
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- Tracking emailed when it ships
- Free fitment check before you order
Listed for: Chevrolet Avalanche 2500Fitment notes & questions
2003 Chevrolet Avalanche 2500 8.1L Intake Valve by DNJ for 2003 Chevrolet Avalanche 2500 with the 8.1L engine. Intake valves let the air and fuel mixture into the cylinder; exhaust valves let the burned gases out.
Quick facts
- Brand: DNJ
- Part type: Valve
- Listed for: 2003 Chevrolet Avalanche 2500
- Engine: 8.1L
- Engine code: VIN G N/R 16V OHV
- Part number: IV3181_21
Listed fitment
- [2001-2007] GM [Nitride Coated; 1 Groove; 55.5mm Head Dia.; 9.4mm Stem Dia.; 132.7mm O.A.L.] / V8 / 8.1L / 496 OHV 16V [(VORTEC)]
Good to know
- Notes: Nitride Coated; 1 Groove; 55.5mm Head Dia.; 9.4mm Stem Dia.; 132.7mm O.A.L.; Intake
- 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: Have the valve seats cut or lapped so the new valves seal fully.

DNJ engine valves for the Chevrolet Avalanche 2500: what to know
Burned or bent valves cause misfires and low compression. Guides that wear let valves wobble and burn oil.
Fitment notes
- Listed for: Chevrolet Avalanche 2500.
- 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? Send us your year, make, model, engine and trim and we'll check before you order.
Ask about fitmentWhat else to plan for
- Valve stem seals. Always new with new valves.
- Head gasket. The head comes off for this job.
More for your car: Chevrolet Intake Valves · Chevrolet Parts · All Intake Valves · Engine
Questions about Chevrolet Avalanche 2500 engine valves
Will this fit my Chevrolet Avalanche 2500?
How do I know a valve is bad?
Where do specs and warranty details come from?
Questions & answers
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