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Blackmer · Hardware & Fasteners
903522
In stock · ships from Knoxville
The Blackmer 903522 lock washer is a genuine replacement part for Blackmer positive displacement and sliding vane pumps, often used on fuel tank trucks, chemical trailers, and industrial fluid transfer systems.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 2 applications
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All confirmed applications for this part number.
Other applications
Other applications
This is a pump component, not a direct vehicle-fitment part. Commonly found in PTO-driven Blackmer pumps on tanker trucks.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 2 of 2.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It secures fasteners against vibration and loosening, helping maintain pump reliability. Replace it during pump overhaul or whenever the washer shows signs of wear, corrosion, or deformation.
Part Number: 903522
LOCK WASHER
Unit: ea
Dealer: Post Onsite
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