DNJ
DNJ 2004 Jeep Wrangler 4.0L Expansion Plug
DNJ 2004 Jeep Wrangler 4.0L Expansion Plug
Part number: FPS1120_50
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- Free fitment check before you order
Listed for: Jeep Wrangler 4.0LFitment notes & questions
2004 Jeep Wrangler 4.0L Expansion Plug by DNJ for 2004 Jeep Wrangler 4 with the 4.0L engine. Thread type and size must match on both sides; AN, NPT and metric threads do not mix.
Quick facts
- Brand: DNJ
- Part type: Fitting
- Listed for: 2004 Jeep Wrangler 4
- Engine: 4.0L
- Engine code: 12V OHV
- Part number: FPS1120_50
Listed fitment
- [1987-2006] JEEP / L6 / 4.0L / 242 OHV 12V
Good to know
- Notes: Brass
- Warranty terms: 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.
Tip: Confirm thread type and size on both sides, and use the right sealant or none as the fitting type requires.

DNJ fitting or hardware for the Jeep Wrangler 4.0L: what to know
Thread type and size must match on both sides; AN, NPT and metric threads do not mix.
Fitment notes
- Listed for: Jeep Wrangler 4.0L.
- 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? Tell us exactly what you drive and we'll confirm fitment first. It's free and saves a return.
Ask about fitmentWhat else to plan for
- Hose. Match hose size to the fitting.
More for your car: Jeep Parts · Fuel & air intake
Questions about Jeep Wrangler 4.0L fitting or hardware
Will this fit my Jeep Wrangler 4.0L?
Does it need thread sealant?
Where do specs and warranty details come from?
Questions & answers
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