4N8124 Turbocharger Bearing Housing for CAT 3406 | 4MFW-731 Replacement

This aftermarket 4N8124 bearing housing is a replacement component for 4MFW-731 turbochargers, listed for Caterpillar CAT 3406 and D8N applications. Verify your specific engine code and OEM reference numbers such as 0R5408 or 158542 before ordering to ensure correct fitment.

Key Specifications

• Part Number: 4N8124
• Product Type: Bearing Housing
• Turbo Model: 4MFW-731
• Application Clues: Caterpillar CAT 3406, CAT D8N
• Representative OEM Reference Numbers: 0R5408, 158542, 178210 BH, 178216 BH, 181614 BH, 186554 BH
• Packing: N/A
• Gross Weight: 0 kg
• Image Availability: Not available

Application & Compatibility

Source application path clues for buyer verification. These are source category/application paths, not confirmed fitment claims:

• Caterpillar > CAT > CAT D8N > CAT 3406

This bearing housing is listed for Caterpillar CAT 3406 and D8N applications, associated with the 4MFW-731 turbocharger model. The supplied application path serves as a reference clue for identification; buyers must verify the specific engine code, production year, and turbo configuration before ordering.

• Reference Application: Caterpillar > CAT > CAT D8N > CAT 3406
• Verification Step: Cross-check your existing component against representative OEM reference numbers such as 0R5408, 158542, or 178210 BH.
• Fitment Check: Confirm that the part number 4N8124 matches your service manual or existing part to ensure the correct replacement application for your specific unit.

Technical Notes

The 4N8124 bearing housing supports the 4MFW-731 turbocharger assembly, serving as a critical structural component for turbine and compressor wheel alignment. This part is associated with Caterpillar CAT 3406 and D8N applications, where it helps maintain stable operation under heavy-duty conditions. Buyers should verify the specific turbo configuration and engine code to ensure the correct replacement application. Technical fitment support is available to assist with OEM reference verification, including cross-checking numbers such as 0R5408 and 158542 against your existing unit.

B2B Supply

LeadTurbo supports B2B buyers, repair shops, and distributors with volume pricing and worldwide shipping for the 4N8124 bearing housing. Technical fitment support is available to assist with verifying OEM reference numbers such as 0R5408 or 158542 against your specific CAT 3406 or D8N application. For bulk orders or complex turbo configurations, our team can help confirm the correct replacement application before shipment. Contact us with your engine details and part number to request a quote or technical clarification.