The ARP 140-5002 is a Pro Series main bolt kit engineered for Small Block Mopar / B / RB-Series V8 engines (273-440 Wedge) with 2-bolt main caps. Each bolt uses a 12-point head design and is machined from chromoly steel with a black oxide finish.
Specifications:
- Pro Series design
- 12-Point head
- 2-Bolt main application
- Chromoly steel construction
- Black oxide finish
Applications:
- Small Block Mopar / B / RB-Series V8 engines, 273-440 Wedge, 2-bolt main
FAQ
What material is the ARP 140-5002 main bolt kit made from?
It is machined from chromoly steel and finished in black oxide for corrosion resistance and strength.
What head style do these main bolts use?
They use a 12-point head design as part of ARP's Pro Series line.
Which engines does the 140-5002 kit fit?
It is designed for Small Block Mopar / B / RB-Series V8 engines (273-440 Wedge) with 2-bolt main caps.
Is this kit compatible with 4-bolt main blocks?
No, this kit is specifically designed for 2-bolt main applications.

