DNJ
DNJ 1981 Chevrolet K5 Blazer 5.7L Oil Pump
DNJ 1981 Chevrolet K5 Blazer 5.7L Oil Pump
Part number: OP3125HV_1085
Couldn't load pickup availability
- Ships direct from the brand or supplier
- Tracking emailed when it ships
- Free fitment check before you order
Listed for: Chevrolet K5 BlazerFitment notes & questions
1981 Chevrolet K5 Blazer 5.7L Oil Pump from DNJ, listed for 1981 Chevrolet K5 Blazer with the 5.7L engine. Oil pumps are usually replaced during an engine rebuild or when pressure drops, together with the pickup screen.
Quick facts
- Brand: DNJ
- Part type: Oil pump
- Listed for: 1981 Chevrolet K5 Blazer
- Engine: 5.7L
- Engine code: 16V OHV
- Part number: OP3125HV_1085
Listed fitment
- [1962-1997] GM [w/ High Volume; w/ 5/8 Inlet] / V6, V8 / 4.3L, 4.6L, 4.9L, 5.0L, 5.3L, 5.7L, 6.6L / 262, 265, 283, 302, 305, 307, 327, 350, 400 OHV 12V, 16V [(CHEVROLET, LT1, VORTEC)]
Good to know
- Notes: High Volume; w/ 5/8 Inlet
- 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: Prime the new pump with oil before installation so it picks up quickly on first start.

DNJ oil pump for the Chevrolet K5 Blazer: what to know
Low oil pressure is serious. A worn pump, clogged pickup or worn bearings can all cause it.
Fitment notes
- Listed for: Chevrolet K5 Blazer.
- 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? Send us your year, make, model, engine and trim and we'll check before you order.
Ask about fitmentWhat else to plan for
- Oil pan gasket. The pan usually comes off for this job.
- Oil and filter. Start fresh after the job.
More for your car: Chevrolet Oil Pumps · Chevrolet Parts · All Oil Pumps · Engine
Questions about Chevrolet K5 Blazer oil pump
Will this fit my Chevrolet K5 Blazer?
What causes low oil pressure?
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.