Journal Bearing Replacement for Alfa Romeo M631AT20C and Mitsubishi 4D34 Turbochargers

This aftermarket journal bearing serves as a replacement component for turbocharger rebuilds, specifically referenced for Alfa Romeo M631AT20C and Mitsubishi 4D34 engine applications. Designed for B2B repair shops and distributors, this lightweight bearing supports maintenance workflows with technical fitment support and volume pricing available upon request.

Key Specifications

This journal bearing is engineered for precision turbocharger rebuilds, supporting critical internal rotation stability. The component features a lightweight design with a gross weight of approximately 0.03 kg, facilitating easy handling during assembly. Constructed to meet standard aftermarket replacement specifications, it aims to restore smooth shaft operation within the CHRA. Buyers should verify inner and outer diameters against their specific turbo model to ensure correct dimensional alignment before installation.

Application & Compatibility

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

• ALFA-ROMEO > ALFA-ROMEO 164 CAR > ALFA-ROMEO M631AT20C
• CAT > CAT E200B > CAT S4KT
• HYUNDAI > HYUNDAI TRUCK MIGHT II > HYUNDAI D4D
• HYUNDAI > HYUNDAI TRUCK MIGHTY II > MITSUBISHI 4D34-D4DB
• HYUNDAI > HYUNDAI TRUCK MIGHTY II > MITSUBISHI 4D34TI
• MITSUBISHI > MITSUBISHI CANTER 60 LWK TRUCK > MITSUBISHI 4D34T1
• MITSUBISHI > MITSUBISHI LANCER EVO 3 > MITSUBISHI 4G63N DOM 270HP
• MITSUBISHI > MITSUBISHI LANCER EVO 5 > MITSUBISHI 4G63N 280HP
• MITSUBISHI > MITSUBISHI 4D34-2AT
• MITSUBISHI > MITSUBISHI 4D34
• MITSUBISHI > MITSUBISHI 4D56Q
• MITSUBISHI > MITSUBISHI 4G63
• MITSUBISHI > MITSUBISHI ECLIPSE 2 0L
• MITSUBISHI
• OTHER TURBOCHARGER

This journal bearing is listed for reference applications across multiple vehicle platforms. Key application clues include Alfa Romeo 164 with M631AT20C engines, CAT E200B S4KT, and Hyundai Truck Might II with D4D engines. Mitsubishi applications cover the 4D34 series, including 4D34T1 and 4D34-D4DB variants found in Canter trucks and Lancer Evo models. Buyers must verify specific engine codes and turbocharger models against these reference paths. Confirm fitment details before ordering to ensure correct component selection.

Technical Notes

Journal bearings manage radial loads within the turbocharger shaft assembly, ensuring stable rotation during operation. This component is critical for maintaining proper clearance and reducing friction in the CHRA. Buyers should inspect the bearing surface for smoothness and verify dimensional tolerances match the specific turbo model. Correct installation requires clean handling to prevent contamination. Always cross-reference the inner and outer diameters with your existing unit before finalizing the order.

B2B Supply

LeadTurbo supports B2B buyers with volume pricing for bulk orders of this journal bearing. Worldwide shipping is available to repair shops, distributors, and fleet parts buyers. Technical fitment support helps verify engine codes like M631AT20C or 4D34 before purchase. Contact our team to confirm stock levels and shipping timelines for your specific application.