DNJ
DNJ 1966 Mercury Monterey 6.4L Expansion Plug
DNJ 1966 Mercury Monterey 6.4L Expansion Plug
Part number: FPS4205_89
Regular price
$36.99 USD
Regular price
Sale price
$36.99 USD
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- Ships direct from the brand or supplier
- Tracking emailed when it ships
- Free fitment check before you order
1966 Mercury Monterey 6.4L Expansion Plug from DNJ, listed for 1966 Mercury Monterey 6 with the 6.4L engine. Quality hardware prevents leaks that are hard to chase down later.
Quick facts
- Brand: DNJ
- Part type: Fitting
- Listed for: 1966 Mercury Monterey 6
- Engine: 6.4L
- Engine code: 16V OHV
- Part number: FPS4205_89
Listed fitment
- [1961-1977] FORD / V8 / 6.4L / 390 OHV 16V
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.

About this fitting
Quality hardware prevents leaks that are hard to chase down later.
Fitment notes
- 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? Send us your year, make, model, engine and trim and we'll check before you order.
Ask about fitmentParts that usually go with it
- Hose. Match hose size to the fitting.
More for your car: Mercury Parts · Fuel & air intake
Questions about fitting or hardware
Will this fit my car?
Check the title and details above for the vehicles and part number it is listed for. If you are not sure, contact us with your year, make, model, engine and trim and we will confirm fitment before you order.
Does it need thread sealant?
NPT threads do; AN and flare fittings seal on the flare and should go on dry.
Where do specs and warranty details come from?
From DNJ. Each brand sets its own specs, lead times and warranty terms, and they can change. The product details above are the latest we have.
Questions & answers
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