Cummins 5579405 Common Rail Fuel Injector 5579405PX for Cummins 8.9L Family

1. Overview

The Cummins 5579405 is a common rail diesel fuel injector for the Cummins 8.9L family; its remanufactured form 5579405PX is listed in the Alliant Power remanufactured-injector catalogue. Seller evidence places this number in the QSL9.3 new-number group and in ISL nozzle listings — that is family-level, seller-grade evidence only, so the specific engine application is flagged as to be confirmed rather than stated as final. 100% brand new, bench-tested before dispatch and built to OE specification.

2. Specifications

• Part Number: Cummins 5579405
• Type: Common rail diesel fuel injector
• Condition: 100% brand new
• Warranty: 6 months (core injector)

3. Fitment

• Family: Cummins 8.9L (seller listings: QSL9.3 new-number group; ISL nozzle lists) — specific engine to be confirmed by the engraving on your old injector
• 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. Which 8.9L engine does 5579405 fit? The evidence is family-level (8.9L; QSL9.3 / ISL listings), so the exact engine split is not stated as final. Send us the engraving photo of your old injector or your VIN on WhatsApp — the check is free.

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.