Bosch 0445120237 Common Rail Fuel Injector 5263310 for Cummins QSL 8.9 ISL Case IH New Holland

1. Product Overview

Brand new Bosch 0445120237 common rail fuel injector for Cummins QSL 8.9L / ISL engines and Case IH / New Holland agricultural equipment, Cummins OE number 5263310. The ownership of 5263310 has been settled at dealer-catalogue level: it is the main OE of THIS Bosch number. Listings that hang 5263310 on 0445120144 are bundle errors — 0144 and this injector share the same control valve and sit in the same Cummins service-number family (4934411 / 4944476 / 5263310), which is how the numbers got cross-posted; 0144’s own main OE is 4944476, not 5263310. ⚠ Twin warning: 0445120236 shares this injector’s control valve F00RJ01941 but has a different nozzle (0433172203 vs 0433172201) and a different OE (5263308 vs 5263310 — one digit apart). The two are NOT interchangeable; order by the engraved Bosch number. No Bosch exchange number is listed for this injector in dealer catalogues, so none is shown.

2. Specifications

3. Fitment

Cummins QSL 8.9L / ISL engines; Case IH and New Holland agricultural equipment. Fitment data is for reference only — please confirm by the number engraved on your old injector or send us your VIN before ordering.

4. Cross-Reference

Note: the Cummins service-family numbers 4934411 and 4944476 appear in the same catalogue rows as 5263310 but are not this injector’s own OE numbers; 4944476 belongs to 0445120144. No Bosch exchange number could be confirmed for this injector.

5. After-Sales & Warranty

Professional installation by a qualified diesel technician is recommended. Every injector is covered by a 6-month warranty (3 months for wear parts). Defective or wrong items can be returned or exchanged within 15 days of receipt; return shipping is on the buyer unless the error is ours. Orders are processed within 1–2 business days with tracking, and refunds are issued within 7 business days after inspection. Full terms: see our Shipping & Returns page.

6. Why Choose Us

Factory-direct supply from Wuhan Ranyingyi Trading Co., Ltd. (injector-factory.com). Every injector is bench-tested before shipment, packed for export, and backed by fast, technical support on WhatsApp (+86 156 3802 2858) — send us your old injector’s engraved number or your VIN and we verify the exact match free of charge before you pay.

FAQ

Q1: How can I be sure this injector fits my engine?
A: Send us the number engraved on your old injector, or your VIN, on WhatsApp (+86 156 3802 2858). Our technicians will verify the exact compatibility free of charge before you order. Fitment data on this page is for reference only.

Q2: Does the price include shipping?
A: No. Our prices do not include shipping. Please contact us on WhatsApp (+86 156 3802 2858) for the latest price, and the freight will be confirmed with you on WhatsApp after you place the order, before anything is charged for delivery.

Q3: What warranty and returns do I get?
A: Core injectors carry a 6-month warranty (wear parts 3 months). Defective or wrong items can be returned or exchanged within 15 days of receipt; refunds are processed within 7 business days after inspection.