Replacement Engine Oil Pump for Caterpillar ® 3406 Applications OEM Cross References: 4N733

Product Details

Oil Pump | Caterpillar 3406E / 3406 | Replaces OE# 4N733, 4N0733, 0R0918, 0R9448, 161-4111

This replacement oil pump for Caterpillar 3406 and 3406E engines is manufactured by Interstate-McBee and built from high-grade materials to ensure exceptional performance and durability. Designed to meet or exceed OEM specifications, this brand-new oil pump has undergone rigorous quality testing to deliver reliable oil flow and engine protection under demanding conditions.

No core return is required—this is a brand-new unit, not a remanufactured part.

Compatible with Caterpillar 3406 engine applications, this pump supports the long service life and performance the 3406 series is known for. The CAT 3406 is a robust, heavy-duty inline 6-cylinder diesel engine used widely in trucks, construction equipment, and marine applications. Trusted for decades, the 3406 series is a go-to for reliability, and using premium replacement parts like this oil pump helps maintain its legendary reputation.

Replaces OEM Part Numbers:
4N733, 4N0733, 0R0918, 0R9448, 161-4111, 1614111

Brand: Interstate-McBee
Fits: Caterpillar 3406 / 3406E Engines
Condition: New – No Core Required

Trust Heavy Duty Kits for premium-quality Interstate-McBee engine components built for performance and longevity.

Application & Fitment

• Engine Make: Caterpillar
• Engine Model / Application: 3406

Confirm the original part number and engine identification before ordering. Where applicable, also verify serial-number range, production year, piston style, bearing size or other configuration notes shown in the product information.

Part Numbers & Cross References

• OEM Cross Reference: 4N733
• Interstate-McBee Reference: M-4N733

Need Help Confirming Fitment?

Use the engine model, serial number and original part number when checking compatibility. For kits and sets, review the complete component breakdown above before ordering because contents can vary by engine configuration.