⚙️ Upgrade your engine’s heartbeat with precision and power!
The King Engine Bearings MB 557SI is a vehicle-specific, precision-machined plain bearing designed for optimal oil lubrication. Compact and lightweight at just over 1 pound, it offers durable engine protection and reliable performance, manufactured to OEM standards.
| Brand | King Engine Bearings |
| Item dimensions L x W x H | 5.12 x 1.77 x 3.54 inches |
| Item Weight | 1.1 Pounds |
| Bearing Number | MB557SI |
| Item Thickness | 3.54 Inches |
| Bearing Type | Plain Bearing |
| Compatible Lubricant | Oil |
| UPC | 611500404900 |
| Global Trade Identification Number | 00611500404900 |
| Manufacturer | King Engine Bearings |
| Model | Main Bearings |
| Item Weight | 1.08 pounds |
| Product Dimensions | 5.12 x 1.77 x 3.54 inches |
| Country of Origin | Afghanistan |
| Item model number | MB 557SI |
| Is Discontinued By Manufacturer | No |
| Exterior | Machined |
| Manufacturer Part Number | MB557SI |
| OEM Part Number | MB557SI |
B**D
Motor bearings
Good bearings
G**
Excellent bearings
Used these bearings when rebuilding my LS for 1 thou of extra oil clearance and they were all dead on.King makes great bearings
B**.
Does not fit ls based Chevy engines
I have a lq9 6.0 and these do not fit. The left bearing in the picture is the original and the bearing on the right is the one I ordered.
J**N
Perfect
Good fit.
T**Y
to big
No complaints They are to big for my application it's a SBC 350 or 358 was told crank was stock I guess not it measure
D**D
Good Price and Product
They did the Trick...
D**E
Replacement bearings
These are replacement bearings fit like the original!
L**
Good ish
Perfect replacement for stock bearings in my LQ4, plastigauged all main journals exact same reading throughout
