Remanufactured high pressure pump, cross-ref 5258153, 6CTA89-G2. Bench-tested before shipment.
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5258153 is supplied as a remanufactured replacement high pressure pump. Cross-reference numbers: 5258153, 6CTA89-G2. Application recorded for this part: Fits Cummins — BY. Supply pressure, timing and delivery quantity are all set here. Failures tend to progress gradually — a little more smoke, slightly harder starting when hot, slowly rising consumption — which is why they are often attributed to the injectors before the pump is checked. Look for extended cranking, especially hot, poor throttle response, smoke across the rev range, fluctuating idle speed, and a gradual rise in consumption that cannot be explained by duty cycle. Check supply pressure at the pump inlet and look for air in the clear line before assuming internal wear. Plenty of pumps get replaced for a blocked filter or a suction leak that costs a fraction to put right. Key points: align to the timing marks rather than forcing the drive, prime before cranking, renew seals, confirm adequate supply pressure from the lift pump, and bleed the system fully. Skipping any of these is where most comebacks originate. Rebuild process: full teardown and measurement first, then replacement of all wear components, machining back to specification where required, followed by calibration and bench testing. The difference between this and a cleaned used part is the measurement and test record — we hold every unit to the specification for the part number, not just to 'it runs'. Test sheets available on request, and every unit ships with a 12-month warranty.
| Part number | 5258153 |
| Condition | Remanufactured (not a genuine OEM new part) |
| Cross-reference | 5258153, 6CTA89-G2 |
| Application | Fits Cummins — BY |
| Process | Disassembled, cleaned, measured, wear parts replaced, machined to specification |
| Bench test | Delivery, return flow, opening pressure and leakage recorded before dispatch |
| Warranty | 12 months |
Three very different things are sold under similar descriptions. Here is what separates them, and what to ask before you buy.
Read the guide →The pump sets pressure, quantity and timing. Here is how wear shows up, and the checks that separate pump faults from supply faults.
Read the guide →Water, dirt and misfuelling damage common rail components differently. What to check, and why cleaning the system matters as much as replacing parts.
Read the guide →
