Denso Common Rail Injector 295050-0960 –High-Efficiency Fuel Delivery For Off-Road And Heavy-Duty Diesel Applications

Denso 295050-0960 Common-Rail Injector - Calibrated Fuel Control for GM/Isuzu 2.8 Duramax (Holden Colorado • Chevrolet S10)

Urban delivery, heat-soak restarts, dusty work sites-light commercial diesels expose a weak injector fast. When one cylinder's leak-off rises or its spray pattern coarsens, you'll see slow hot starts, a faint grey puff off the line, and rail-pressure "hunting" on a scan tool. The Denso 295050-0960 is the OE-pattern common-rail injector consistently cataloged for the 2.8 L Duramax LWN platform used in Holden Colorado (RG) and Chevrolet S10, most commonly cross-referenced to GM/Isuzu P/N 12640381. This pairing appears together across professional marketplaces and diesel specialists, giving you a VIN-verifiable replacement path

 

 

Denso Part Number: 295050-0960 (often shown as "new boxed," origin Thailand in trade listings). 

OEM Cross: 12640381 (also written 12640381/295050-0960 on labels and product titles). 

Primary Applications: Holden Colorado 2.8 L Duramax; also listed for Chevrolet S10 2.8 L in kit pages.

 

The 2.8 Duramax strategy relies on multi-event injection (pilot → main) and tight cylinder-to-cylinder balance. When an injector drifts:

Return-flow rises → rail can't meet target, so hot restarts take longer.

Atomization degrades → tip-in smoke and elevated soot load.
Units sold as 295050-0960 / 12640381 are marketed and bench-verified (flow / sealing / spray) to pull those parameters back within the ECU's window-exactly why reputable listings emphasize "tested" and "stable performance" for this number.

 

 

System: Denso high-pressure common-rail, solenoid-controlled

Use case: 2.8 L Duramax LWN in pickup/ute duty (Colorado/S10)

Supply format: Single injector, ports capped; sold as new (and sometimes reman) with bench test documentation listed by distributors. 

Label pairing: 295050-0960 ⇄ 12640381 on product titles and images across specialist sites.

 

 

Prove the fault first - perform a cylinder-by-cylinder return-flow (leak-off) test; replace only the out-of-family unit.

Clean & reseal - carbon in the injector cup ruins sealing; renew copper washer and O-rings.

Fit & torque - install 295050-0960 / 12640381 to service-manual spec; keep HP lines capped until final connection. 

Prime / bleed until commanded rail tracks target smoothly.

ECU housekeeping - where supported, reset trims or register the injector so adaptations stop chasing yesterday's wear pattern.

Prove-out - confirm warm-idle smoothness, reduced smoke at 1 200–1 800 rpm, and a steady rail trace.

 

 

Faster hot restarts - controlled leak-off lets rail pressure rise to target quicker.

Cleaner launch - finer droplet spectrum trims the off-idle puff.

Quieter idle - pilot quantity returns to map; misfire counters settle.

More consistent economy - fuel delivery balanced across cylinders on stop-start routes.

 

 

Use 2–3 per section to match real searches:

"295050-0960 injector for Holden Colorado 2.8"

"12640381 common-rail injector (Duramax LWN)"

"Chevrolet S10 2.8 diesel injector replacement"
These strings mirror trusted catalog wording and marketplace titles for this SKU

 

 

If your Colorado/S10 with the 2.8 L Duramax crosses to Denso 295050-0960 or GM/Isuzu 12640381, this OE-pattern injector is the straightforward way to restore rail stability, quiet idle and clean launch-without guesswork. The 0960 ⇄ 12640381 pairing appears consistently across diesel specialists and marketplace catalogs, making verification simple before you buy.

 

 

 

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