Fuel Injection Pump Overhaul Rebuild Kit for Delphi Lucas CAV DPA – Cross-Reference

Verified Cross-Reference — 12 OEM interchange numbers checked against DPA pump variant records before dispatch.

Technical Specifications

Application Suitability

Why the Same Part Number Ships in Multiple Variants

The base identifier covers several DPA pump generations, but internal dimensions and seal materials differ by production batch.

A cross-reference table copied from one supplier to another rarely flags variant-level differences. I have opened Delphi Lucas CAV DPA pumps where the outer gasket matched the reference number perfectly, yet the internal O-ring groove diameter differed by a fraction of a millimetre — enough to cause a pressure leak within operating hours. This Fuel Injection Pump Overhaul Rebuild Kit for DPA Diesel Engine cross reference set includes 12 identifiers precisely because a single base number does not guarantee internal fitment [NEED_CITE: fuel injection pump variant identification standards]. The cost of a misidentified kit is not the part itself but the machine sitting idle while a replacement ships.

Variant Coverage Across DPA Pump Generations

This Fuel Injection Pump Overhaul Rebuild Kit for DPA Diesel Engine cross reference spans 12 distinct identifiers, each mapped to a specific pump variant. Identifiers such as 7123-576L and 7123-576M share the same root but diverge in seal compound and plunger diameter — differences that matter when the pump housing was machined in a different production run. Our technical team verifies the exact variant from your pump nameplate or serial range before confirming the kit contents.

Port Orientation and Spline Engagement Checks

Physical fitment goes beyond the part number. The DPA pump family includes variants with different fuel inlet port angles, drive spline tooth counts, and mounting flange patterns. We cross-check port position, spline count, and mounting hole spacing against the reference numbers you provide. If your nameplate is worn or painted over, a photograph of the pump body and drive coupling is usually sufficient to narrow the variant [NEED_CITE: diesel fuel pump spline and flange identification methods].

Interpreting Kit Contents Against Your Pump Build

The kit includes gaskets, seals, plungers, delivery valves, O-rings, and bushings. Plunger diameter and delivery valve seating profile must match the specific pump bore and cam box configuration. Using a standard-grade plunger in a pump previously rebuilt to an oversize bore will result in low rail pressure and rough idle. Confirm whether your pump has been rebuilt before and at what oversize, if any, so the correct grade ships with your kit.

The Cost of a Cross-Reference That Was Never Verified

An incorrect seal compound swells under diesel exposure and extrudes past its groove within a shift. A plunger that is half a size off produces erratic injection timing that damages injector nozzles downstream. These failures are not caught at installation — they surface after the tractor is back under load. The return freight on a wrongly specified kit, combined with the second round of downtime, regularly exceeds the value of the original order [NEED_CITE: agricultural tractor fuel system failure root cause analysis].

Why Buyers Source This Kit Through XUNPO

Our production lines and qualified sourced supply carry the same QC terms under one account and one warranty, so a multi-kit order for a fleet overhaul ships as a single consignment. We identify parts from a part number, machine model, photograph, or nameplate image — useful when field equipment has lost its data plate to corrosion or repaint. Cross-reference verification covers superseded and merged numbers, so an older reference that no longer appears in current catalogs still resolves to the correct active kit. Sample kits are available for fitment confirmation before you commit to a bulk order, eliminating guesswork on variant matching. The technical team confirms compatibility and grade, including oversize options after a previous rebuild.

Documentation & Verification

• Commercial invoice and packing list itemising each kit identifier and quantity
• Part compatibility and cross-reference sheet marked reference only for all 12 numbers
• Dimensional check record on seal groove diameters and plunger grades before dispatch
• Warranty terms covering manufacturing defects for 3 to 12 months
• Packing photographs showing kit contents sealed and labelled per identifier
• HS code and customs documentation support for international agricultural equipment shipments

Fitment Check Before Installation

• Compare drive spline tooth count on the new kit coupling against the removed pump shaft before assembly
• Verify fuel inlet port angle matches the existing fuel line routing to avoid forced bends
• Check mounting flange bolt pattern spacing against the pump cradle on the engine block
• Confirm O-ring cross-section diameter seats fully in the groove without protrusion
• Inspect plunger grade marking matches the bore size recorded during teardown
• If any dimension does not align, halt installation and contact the technical team with photographs

Inquiry Guidance

Provide the pump nameplate photograph, serial number, or the specific identifier from your existing unit. If the nameplate is unreadable, a clear image of the drive coupling and port layout allows variant confirmation. For fleet orders covering multiple tractor models, share the equipment list so each pump variant maps to the correct kit before quotation.

Frequently Asked Questions

Q: How do I determine which of the 12 identifiers matches my pump? A: Share the pump nameplate photo or serial number. Our technical team checks port orientation, spline count, and production batch records to pinpoint the correct identifier. If the nameplate is gone, photos of the drive coupling and mounting flange usually narrow it to one or two variants.

Q: My old part number is discontinued — does the replacement seal specification match? A: Superseded numbers often consolidate several earlier variants into one active kit. We verify whether the replacement covers your specific pump batch and flag any seal compound or plunger grade differences before confirming the order.

Q: Why are there multiple cross-reference numbers for what looks like one pump? A: The DPA family evolved across production runs, with changes to internal bore diameter, seal material, and delivery valve profile. Each identifier maps to a specific configuration, and substituting one for another risks pressure loss or premature seal failure.

Q: Can I order a sample kit before committing to a bulk purchase? A: Yes. A single sample kit ships for fitment confirmation. Verify seal seating, spline engagement, and port alignment on one pump before the full order releases from stock.

Q: I only have the tractor model, not the pump number — is that enough? A: The tractor model narrows the likely pump variant but does not guarantee a match, since previous owners may have swapped pumps. A photograph of the pump body and coupling lets us confirm fitment independently of the machine model.