MAHLE Motorsport Racing Connecting Rod / Big End Bearing Set – MX-5 MK3 / NC 1.8 & 2.0 • VC1019

MAHLE Motorsport Racing Connecting Rod / Big End Bearing Set – VC1019

High-performance MAHLE Motorsport connecting rod bearing set for Mazda MX-5 MK3 / NC, MK3.5 / NC2 and MK3.75 / NC3 1.8L and 2.0L MZR petrol engines (2005–2015) using the compatible standard-size connecting rod bearing arrangement.

Manufactured in the United Kingdom using MAHLE's specialist motorsport bearing technology, the VC1019 set is engineered for demanding engine applications, including performance engine rebuilding, motorsport preparation and replacement of worn or damaged connecting rod bearings.

Connecting rod bearings, also known as big-end bearings, are positioned between the crankshaft connecting rod journals and the big ends of the connecting rods. These precision components support the connecting rods while maintaining the pressurised oil film required to protect the rotating assembly under operating loads.

The MAHLE Motorsport bearing design combines a high-strength steel backing, cast bronze substrate and lead-indium overlay. This construction provides a combination of fatigue resistance and conformability suited to high-performance engine operation.

Unlike conventional stamped bearing shells, MAHLE Motorsport bearings feature laser-marked identification, reducing the risk of bearing distortion associated with mechanical stamping.

The VC1019 set contains four pairs of connecting rod bearing shells, providing the eight shells required for all four connecting rods in a compatible four-cylinder engine.

Product features and specifications:

• Product type: Performance connecting rod / big-end bearing set
• Brand: MAHLE Motorsport
• Manufacturer set reference: VC1019
• Constituent bearing reference: VP8021
• Primary use: Connecting rod crankshaft journal support
• Location / system: Engine crankshaft / connecting rod assembly
• Construction: High-strength steel backing with cast bronze bearing substrate
• Overlay: Lead-indium
• Bearing identification: Laser-marked
• Engine applications: Compatible Mazda MZR L8 / LF engines
• Engine capacities: 1.8L and 2.0L
• Vehicle applications: Mazda MX-5 MK3 / NC, NC2 and NC3
• Bearing size: Standard (STD)
• Standard bearing wall thickness: 1.509mm
• Bearing width: 16.60mm
• Applicable standard crankshaft journal diameter: 46.890–46.910mm
• Quantity supplied: 4 pairs / 8 connecting rod bearing shells
• Quantity per engine: 1 complete set
• Main crankshaft bearings: Not included
• Connecting rod bolts: Not included
• Country of manufacture: United Kingdom

MAHLE Motorsport Bearing Technology:

• High-strength steel backing: Provides structural support for the bearing shell within the connecting rod housing.
• Cast bronze substrate: Designed to provide strength and fatigue resistance under demanding engine loads.
• Lead-indium overlay: Provides a bearing surface combining fatigue resistance and conformability.
• Laser marking: Identifies bearing components without mechanical stamping that could distort the bearing shell.
• Motorsport-focused design: Developed for applications where bearing durability and accurate engine assembly are particularly important.

Common replacement reasons: Connecting rod bearings may require replacement following excessive bearing wear, engine oil starvation, abnormal crankshaft journal wear, bearing damage or during a complete engine rebuild. Performance engine preparation may also involve bearing replacement to achieve the required operating clearances for the intended engine application.

Fitment advice: This is the standard-size VC1019 bearing set, intended for compatible connecting rods and crankshafts retaining the specified standard journal dimensions. It is not an undersize bearing set for reground crankshafts. The correct application must be established through crankshaft journal, connecting rod housing and installed bearing clearance measurements before assembly.

Important – Main Bearings Sold Separately: This product contains the connecting rod / big-end bearing shells only. It does not include crankshaft main bearings. Suitable main bearing sets for compatible Mazda MZR engines are available separately from MazSpec.

Other items to consider: When rebuilding the engine bottom end, you may also want to consider main crankshaft bearings, connecting rod bolts, crankshaft oil seals, engine gasket sets, oil pump components, engine oil, oil filter and suitable engine assembly lubricant.

Useful tools / consumables: Precision micrometers, dial bore gauge, calibrated torque wrench, engine stand, bearing clearance measuring equipment, appropriate engine assembly lubricant and suitable engine cleaning materials.

Difficulty guide: DIY Difficulty: Advanced. Connecting rod bearing replacement requires engine dismantling, accurate dimensional measurements and correct bearing clearance selection. Professional engine-building experience and precision measuring equipment are recommended.

Why MAHLE Motorsport? MAHLE Motorsport develops high-performance engine bearing components using technology derived from professional motorsport applications. Manufactured in a specialist UK bearing facility, the VC1019 set combines high-strength backing material, a cast bronze substrate, lead-indium overlay and laser-marked identification to deliver a performance-oriented bearing solution for compatible engine builds.

What's in the box: 1 × MAHLE Motorsport VC1019 Standard Connecting Rod Bearing Set containing 4 upper and 4 lower big-end bearing shells (8 shells total). Main crankshaft bearings and connecting rod bolts are not included.

Installation / service notes: Before installation, measure all crankshaft connecting rod journals and connecting rod housing bores. Inspect the crankshaft for scoring, taper, out-of-round wear and other damage. Thoroughly clean the crankshaft oil passages, connecting rod housings and bearing contact surfaces. Fit the bearing shells in their correct positions and lubricate the bearing surfaces in accordance with the engine assembly procedure. Tighten connecting rod fasteners using the applicable engine or aftermarket fastener specifications. Verify installed oil clearances and free crankshaft rotation before completing assembly. Prime the engine lubrication system before initial startup.