- Home
- Products
- Diesel Engine Spares
- Big-End Bearing Sets
- KMP Big-End Bearing Set 85042C (0.030" undersize)
KMP Big-End Bearing Set 85042C (0.030" undersize)
Part 85042C is a KMP Brand big-end bearing set: the split shells that sit between each connecting rod and the crankshaft journal. This set is 0.030" undersize.
About this part
Every power stroke is transferred from the connecting rod to the crank through these shells. They are a wear part by design: softer than the crank so that the shells, not the crankshaft, take the damage when lubrication is poor.
When to replace it
- A deep knock under load that rises with engine speed
- Low oil pressure when the engine is hot
- Bronze or copper flakes in the drained oil or filter
- Scored or polished shells found during an inspection
Before you order
Measure the crank journals before ordering. Standard shells suit an unground crank; undersize sets (marked 0.010" / 0.25 mm and up) are for a crank that has been reground by that amount.
If the old part has no readable number, send us a clear photo with the engine or alternator nameplate and we will identify it before you buy.
Questions
Is this a complete engine set?
Bearing sets are packed per engine. Check the quantity against the number of cylinders when the set arrives, and call us if anything is missing.
Should I replace main bearings at the same time?
If the engine is apart for a big-end failure, the mains have usually seen the same oil starvation. Most rebuilders do both.
Specifications
| Part number | 85042C |
|---|---|
| Brand | KMP Brand |
| Range | Big-End Bearing Sets |
| Size | 0.030" undersize |
Not sure it fits?
Send us the number on your old part, or a photo with the engine or alternator nameplate, and we'll confirm the match.
WhatsApp Mieke
