Cummins 5579417 XPI Common Rail Fuel Injector for Cummins ISX15 / QSX15

1. Overview

The Cummins 5579417 is an XPI common rail fuel injector for the Cummins ISX15 / QSX15; its remanufactured form is 5579417PX. ⚠️ The paired previous number is reported two ways that differ by one digit: the Interstate-McBee kit table pairs 5579417 with 2892405, while market kit listings and a Cummins parts table pair it with 2872405. The exact pairing is not confirmed, so both are shown flagged rather than either being stated as fact — always order by the engraving on your old injector. A parts-table listing also shows injector body number 4984369 in the same row. Note: XPI injectors are Cummins-made — there is no Bosch equivalent number for this injector. 100% brand new, bench-tested before dispatch and built to OE specification.

2. Specifications

• Part Number: Cummins 5579417
• Type: XPI common rail diesel fuel injector (Cummins XPI system)
• Condition: 100% brand new
• Warranty: 6 months (core injector)

3. Fitment

• Engines: Cummins ISX15 / QSX15 (XPI)
• for reference only — please confirm by the number engraved on your old injector or send us your VIN before ordering.

4. Cross-Reference

5. After-Sales & Warranty

Every injector is bench-tested before dispatch. If you receive a defective item or the wrong model, contact us within 15 days for a return or exchange (return shipping is on the buyer unless the error is ours). Core injectors carry a 6-month warranty and wear parts 3 months. Orders are processed in 1–2 business days and shipped with tracking; refunds are issued within 7 business days after the returned item passes inspection. Professional installation by a diesel technician is strongly recommended.

6. Why Choose Us

Wuhan Ranyingyi Trading Co., Ltd. (injector-factory.com) supplies diesel fuel injectors factory-direct. Free fitment check: send a photo of the engraving on your old injector or your VIN on WhatsApp (+86 156 3802 2858) and we confirm the exact match before you order. Fast response, careful packing and worldwide shipping.

FAQ

1. Does the price include shipping? No. This item is Price: On Request — contact us on WhatsApp (+86 156 3802 2858) for the latest price. Prices do not include freight; the freight cost is confirmed with you on WhatsApp after you place the order, based on your destination and quantity.

2. Is the old number 2892405 or 2872405? Both are reported: Interstate-McBee’s kit table says 2892405, while kit listings and a parts table say 2872405 — a one-digit difference that is not yet resolved. Check the engraving on your old injector and send us a photo on WhatsApp before ordering so we can confirm the match.

3. What warranty do I get? A 6-month warranty on the injector (3 months on wear parts). Defective or wrong items can be returned or exchanged within 15 days — see After-Sales & Warranty above.