DNJ
DNJ 1999 Mazda B4000 4.0L Crankshaft Seal
DNJ 1999 Mazda B4000 4.0L Crankshaft Seal
Part number: RM422_53
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Listed for: Mazda B4000 4.0LFitment notes & questions
DNJ 1999 Mazda B4000 4.0L Crankshaft Seal, listed for 1999 Mazda B4000 with the 4.0L engine. Rubber seals age and harden over time, so older engines often need them when other work is done nearby.
Quick facts
- Brand: DNJ
- Part type: Seal
- Listed for: 1999 Mazda B4000
- Engine: 4.0L
- Engine code: VIN T 12V OHV
- Part number: RM422_53
Listed fitment
- [1986-2011] FORD, LAND ROVER, MAZDA / V6 / 2.9L, 4.0L / 177, 245 OHV, SOHC 12V
Good to know
- 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: Lightly oil the seal lip before installation and press it in square so it does not cock or fold.

About this seal for the Mazda B4000 4.0L
Rubber seals age and harden over time, so older engines often need them when other work is done nearby.
Fitment notes
- Listed for: Mazda B4000 4.0L.
- 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? Tell us exactly what you drive and we'll confirm fitment first. It's free and saves a return.
Ask about fitmentParts that usually go with it
- Timing parts. Front crank and cam seals sit behind the timing belt or chain, so they are often done together.
More for your car: Mazda Parts · All Crankshaft Seals · Engine
Questions about Mazda B4000 4.0L seal
Will this fit my Mazda B4000 4.0L?
How do I know a seal is leaking?
Where do specs and warranty details come from?
Questions & answers
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