DNJ
DNJ Expansion Plug Kit 1987-2006 Jeep 4.0L
DNJ Expansion Plug Kit 1987-2006 Jeep 4.0L
Part number: FPS1120
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Listed for: 1987–2006 JeepFitment notes & questions
Expansion Plug Kit by DNJ, made to fit the 1987–2006 Jeep with the 4.0L engine as listed below. Fittings and hardware connect lines, hoses and parts securely. Part number: FPS1120.
Key features
- DNJ Brass Freeze Plug Set
- Made for 12V OHV engines
- Listed for L6 4.0L 242 OHV 12V engines
Specifications
- Brand: DNJ
- Part type: Fitting
- Part number: FPS1120
- Engine: 4.0L
- Engine code: 12V OHV
Fitment for the 1987–2006 Jeep
- Years: 1987–2006
- Vehicles: Jeep
- Cylinders: L6
- Displacement: 4.0L
- Engine: 242 OHV 12V
Check your year, model, engine and trim against this list before you order.
What it does
Quality hardware prevents leaks that are hard to chase down later. The right fitting, thread and size keeps a connection sealed and secure, which matters most on fuel, oil, coolant and brake lines.
Installation & tips
- Confirm thread type and size on both sides, and use the right sealant or none as the fitting type requires.
- Hose: Match hose size to the fitting.
- 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 expansion plug kit?
FPS1120 (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 4.0L 12V OHV engine in the 1987–2006 Jeep. 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 (1987–2006 Jeep 4.0L).
- Compare part number FPS1120 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.
About this fitting for the Jeep
Quality hardware prevents leaks that are hard to chase down later.
Fitment notes
- Listed for: 1987–2006 Jeep.
- Model years: 1987–2006. If your year sits at the edge of the range, check the details above.
- Engine: the same car can take different parts for each engine option, so check yours.
- 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? Message us your vehicle details and we'll double-check fitment before you buy.
Ask about fitmentParts that usually go with it
- Hose. Match hose size to the fitting.
More for your car: Jeep Parts · Fuel & air intake
Questions about Jeep fitting or hardware
Will this fit my Jeep?
Does it need thread sealant?
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.