DNJ
DNJ Piston Set (Oversizes Available) 2000-2001 INFINITI 3.0L
DNJ Piston Set (Oversizes Available) 2000-2001 INFINITI 3.0L
Part number: P643
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- Ships direct from the brand or supplier
- Tracking emailed when it ships
- Free fitment check before you order
Piston Set from DNJ. Piston and ring size depends on the bore, so match them to your block after it is measured. Part number: P643.
Key features
- Made for VQ30DE engines
- Listed for V6 3.0L DOHC engines
- Available in 2 size options
Specifications
- Brand: DNJ
- Part type: Piston
- Part number: P643
- Engine: 3.0L
- Engine code: VQ30DE
- Model years: 2000–2001
Options
- Size: Standard, Oversize .020 in. (.50mm)
Fitment
- Years: 2000–2001
- Vehicles: Infiniti, I30
- Cylinders: V6
- Engine: 3.0L DOHC
- Details: [1.2x1.2x2.5]
What it does
Worn rings show up as oil burning, blow-by and low compression. Using the correct part for your exact engine keeps oil pressure, sealing and timing where the engine was designed to run, and doing related parts at the same time saves taking it apart twice.
Installation & tips
- Check ring end gaps in the bore before installation and stagger the gaps.
- Bearings: Rod and main bearings are usually replaced at the same time.
- Gasket set: The engine comes apart for this job.
- 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 piston set?
P643 (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 3.0L VQ30DE engine. 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
- Compare part number P643 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: fitment and what to plan
Pistons and rings seal the combustion chamber and turn pressure into motion.
Fitment notes
- 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? Send us your year, make, model, engine and trim and we'll check before you order.
Ask about fitmentPlan the whole job
- Bearings. Rod and main bearings are usually replaced at the same time.
- Gasket set. The engine comes apart for this job.
More for your car: Infiniti Parts · All Pistons · Engine
Questions about pistons
Will this fit my car?
Standard or oversize?
Where do specs and warranty details come from?
Questions & answers
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