DNJ
DNJ 2007 GMC Sierra 2500 HD 6.6L Intake Plenum Gasket
DNJ 2007 GMC Sierra 2500 HD 6.6L Intake Plenum Gasket
Part number: MG3221_26
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- Free fitment check before you order
Listed for: GMC Sierra 2500Fitment notes & questions
2500 HD Intake Plenum Gasket from DNJ, listed for the 2007 GMC Sierra with the 6.6L engine. Cracked plastic manifolds and leaking gaskets cause vacuum leaks, rough idle and lean codes. Part number: MG3221_26.
Key features
- Made for VIN 2 Duramax 32V Turbocharged OHV DIESEL engines
- Listed for V8 6.6L 403 OHV 32V engines
Specifications
- Brand: DNJ
- Part type: Intake manifold
- Part number: MG3221_26
- Engine: 6.6L
- Engine code: VIN 2 Duramax 32V Turbocharged OHV DIESEL
Fitment for the 2007 GMC Sierra
- Years: 2004–2010
- Vehicles: GM
- Cylinders: V8
- Displacement: 6.6L
- Engine: 403 OHV 32V
- Engine codes: LBZ, LLY, LMM
Check your year, model, engine and trim against this list before you order.
What it does
The intake manifold carries air from the throttle body to each cylinder. Air and fuel parts decide how well the engine breathes and how cleanly it runs, so the right part restores smooth running and can support more power on a modified engine.
Installation & tips
- Fit new intake gaskets and torque the bolts in sequence to avoid vacuum leaks.
- Intake manifold gaskets: Always new.
- Vacuum hoses: Old hoses crack when disturbed.
- Put the new part next to the old one and compare the shape, mounting points and connections before you install it.
- Work on a cool engine with the vehicle secured, and use a service manual for your vehicle for torque specs and procedures.
FAQ
What is the part number of this intake manifold?
MG3221_26 (DNJ). Compare it with the number on your old part or in your parts catalog.
Which engine is it for?
It is listed for the 6.6L VIN 2 Duramax 32V Turbocharged OHV DIESEL engine in the 2007 GMC Sierra. Check the engine code on your vehicle if it was offered with more than one engine.
Can I install it myself?
Many owners do this job at home with basic tools and a service manual for their vehicle. If you are not sure, have it fitted by a qualified mechanic.
Before you order
- Confirm your year, make, model, engine and trim match the fitment listed above (2007 GMC Sierra 6.6L).
- Compare part number MG3221_26 with your original part.
Good to know
- Warranty: 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.
DNJ intake manifold for the GMC Sierra 2500: what to know
Cracked plastic manifolds and leaking gaskets cause vacuum leaks, rough idle and lean codes.
Fitment notes
- Listed for: GMC Sierra 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
- Intake manifold gaskets. Always new.
- Vacuum hoses. Old hoses crack when disturbed.
More for your car: Engine · GMC Parts · All Intake Manifolds · Fuel & air intake
Questions about GMC Sierra 2500 intake manifold
Will this fit my GMC Sierra 2500?
What are signs of an intake leak?
Where do specs and warranty details come from?
Questions & answers
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