DNJ
DNJ 2000 Chevrolet Express 3500 7.4L Intake Plenum Gasket
DNJ 2000 Chevrolet Express 3500 7.4L Intake Plenum Gasket
Part number: MG3174_78
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- Tracking emailed when it ships
- Free fitment check before you order
Listed for: Chevrolet Express 3500Fitment notes & questions
3500 Intake Plenum Gasket from DNJ, listed for the 2000 Chevrolet Express with the 7.4L engine. Performance manifolds change the runner shape to move power up or down the rev range. Part number: MG3174_78.
Key features
- Intake position
- Made for 16V OHV engines
- Listed for V8 7.4L 454 OHV 16V engines
Specifications
- Brand: DNJ
- Part type: Intake manifold
- Part number: MG3174_78
- Position: Intake
- Engine: 7.4L
- Engine code: 16V OHV
Fitment for the 2000 Chevrolet Express
- Years: 1996–2000
- Vehicles: GM
- Cylinders: V8
- Displacement: 7.4L
- Engine: 454 OHV 16V
Check your year, model, engine and trim against this list before you order.
What it does
Cracked plastic manifolds and leaking gaskets cause vacuum leaks, rough idle and lean codes. 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?
MG3174_78 (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 7.4L 16V OHV engine in the 2000 Chevrolet Express. Check the engine code on your vehicle if it was offered with more than one engine.
Which side or position does it fit?
It is listed for the intake position. If you are replacing both sides, check whether you need one of each.
Before you order
- Confirm your year, make, model, engine and trim match the fitment listed above (2000 Chevrolet Express 7.4L).
- Check the position: this part is listed as intake.
- Compare part number MG3174_78 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.

Before you order: Chevrolet Express 3500 intake manifold fitment
The intake manifold carries air from the throttle body to each cylinder.
Fitment notes
- Listed for: Chevrolet Express 3500.
- Engine: check the engine size listed against your vehicle's VIN or under-hood label.
- 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 fitmentPlan the whole job
- Intake manifold gaskets. Always new.
- Vacuum hoses. Old hoses crack when disturbed.
More for your car: Chevrolet Parts · All Intake Manifolds · Fuel & air intake
Questions about Chevrolet Express 3500 intake manifold
Will this fit my Chevrolet Express 3500?
What are signs of an intake leak?
Where do specs and warranty details come from?
Questions & answers
No questions yet about this part. Ask about fitment, what's in the box or installation and we'll answer here.