DNJ Piston Ring Set 1968-1996 Chevrolet, Ford, GMC, Oldsmobile 3.9L-4.9L (Oversizes Available)

Piston Ring Set by DNJ, made to fit the 1968–1996 Chevrolet, Ford, GMC and Oldsmobile with the 3.9L engine as listed below. Piston and ring size depends on the bore, so match them to your block after it is measured. Part number: PR3125C.

Key features

• Made for Set Services Complete Engine, 2.0x2.0x4.8, Cast Rings. engines
• Listed for L6, V6 3.9L, 4.3L, 4.9L 240, 262, 300 OHV 12V engines
• Available in 5 size options

Specifications

• Brand: DNJ
• Part type: Piston
• Part number: PR3125C
• Engine: 3.9L
• Engine code: Set Services Complete Engine, 2.0x2.0x4.8, Cast Rings.

Options

• Size: Standard, Oversize .020 in. (.50mm), Oversize .030 in. (.75mm), Oversize .040 in. (1.00mm), Oversize .060 in. (1.50mm)

Fitment for the 1968–1996 Chevrolet, Ford, GMC and Oldsmobile

• Years: 1968–1996
• Vehicles: Ford, GM
• Application: 2.0x2.0x4.8
• Cylinders: L6, V6
• Displacement: 3.9L, 4.3L, 4.9L
• Engine: 240, 262, 300 OHV 12V

Check your year, model, engine and trim against this list before you order.

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 ring set?
PR3125C (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 3.9L Set Services Complete Engine, 2.0x2.0x4.8, Cast Rings. engine in the 1968–1996 Chevrolet, Ford, GMC and Oldsmobile. 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 (1968–1996 Chevrolet, Ford, GMC and Oldsmobile 3.9L).
• Compare part number PR3125C 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.