Clevite CB-1839A-.50MM Engine Connecting Rod Bearing Pair

Clevite CB-1839A-.50MM Connecting Rod Bearings

Clevite CB-1839A-.50MM is an OE Replacement engine connecting rod bearing pair built for applications that require a 0.50 mm undersize fit. This A Series aluminum bearing uses lead-free aluminum silicon construction and is engineered for improved journal surface conditioning, seizure resistance, and wear resistance.

Compatible With Ford Ranger, Ford Fusion, Mazda B2300, Mercury Milan, Ford Escape, Mazda Tribute, Mercury Mariner, Ford Focus, Mazda 3, and Mazda 6 applications listed below.

• OE Replacement bearing item grade
• A Series aluminum construction
• 100% lead-free aluminum silicon material
• 0.50 mm undersize sizing
• Meets or exceeds original equipment manufacturer specifications
• Engineered for improved journal surface conditioning
• Built for greater seizure and wear resistance

Fitment Details

• Fits 2001-2011 Ford Ranger, N/A; OE Replacement; A Series (Aluminum); .50mm Undersize; Connecting Rods With Housing Bore Resized .002in Larger Than Stock
• Fits 2006-2009 Ford Fusion, N/A; OE Replacement; A Series (Aluminum); .50mm Undersize; Connecting Rods With Housing Bore Resized .002in Larger Than Stock
• Fits 2001-2009 Mazda B2300, N/A; OE Replacement; A Series (Aluminum); .50mm Undersize; Connecting Rods With Housing Bore Resized .002in Larger Than Stock
• Fits 2006-2009 Mercury Milan, N/A; OE Replacement; A Series (Aluminum); .50mm Undersize; Connecting Rods With Housing Bore Resized .002in Larger Than Stock
• Fits 2005-2008 Ford Escape, N/A; OE Replacement; A Series (Aluminum); .50mm Undersize; Connecting Rods With Housing Bore Resized .002in Larger Than Stock
• Fits 2008 Mazda Tribute, N/A; OE Replacement; A Series (Aluminum); .50mm Undersize; Connecting Rods With Housing Bore Resized .002in Larger Than Stock
• Fits 2005-2006 Mazda Tribute, N/A; OE Replacement; A Series (Aluminum); .50mm Undersize; Connecting Rods With Housing Bore Resized .002in Larger Than Stock
• Fits 2005-2008 Mercury Mariner, N/A; OE Replacement; A Series (Aluminum); .50mm Undersize; Connecting Rods With Housing Bore Resized .002in Larger Than Stock
• Fits 2003-2007 Ford Focus, N/A; OE Replacement; A Series (Aluminum); .50mm Undersize; Connecting Rods With Housing Bore Resized .002in Larger Than Stock
• Fits 2004-2005 Mazda 3, N/A; OE Replacement; A Series (Aluminum); .50mm Undersize; Connecting Rods With Housing Bore Resized .002in Larger Than Stock
• Fits 2003-2005 Mazda 6, N/A; OE Replacement; A Series (Aluminum); .50mm Undersize; Connecting Rods With Housing Bore Resized .002in Larger Than Stock

What This Bearing Helps Address

• Rod bearing wear from journal surface damage
• Clearance correction after crankshaft machining
• Seizure risk in high-load engine operation
• Noise or knock related to worn connecting rod bearings
• Restoration of proper oil film support in resized rods

Installation Notes

Verify crankshaft journal size and connecting rod housing bore before installation. This part is specified as 0.50 mm undersize and is listed for connecting rods with housing bores resized .002 in larger than stock. Clean all mating surfaces thoroughly and confirm oil clearance during assembly.

This part cross-references no listed aftermarket part numbers in the provided data.

Quality Assurance

Clevite states that this bearing meets or exceeds original equipment manufacturer specifications. The bi-metal aluminum design and lead-free aluminum silicon construction are intended to support durability and dependable engine service in the listed Ford, Mazda, and Mercury applications.