ARP Pro-Series 12-Point Flywheel Bolt Kit Automatic Transmission Small/Big Block

Install a flexplate in your automatic transmission V8 small block or big block V8 engine with confidence using this ARP (200-2902) 12-point Pro-Series flexplate bolt kit. The specifications of this flexplate bolt kit will ensure improved positioning, increased strength and long-lasting durability for better overall operation of the flexplate. Constructed from 8740 chromoly steel, this hardware kit is heat-treated prior to thread rolling and machining for enhanced durability. To increase strength a 12-point head design is utilized in conjunction with a larger-than-stock shank diameter.

Features and Benefits:
- High-strength 8740 chromoly steel construction
- Heat-treated for increased durability
- 12-point head design
- Larger-than-stock shank diameter adds support
- Increased flywheel strength and stability
- Improved flywheel positioning and engagement
- Includes six (6) bolts

Specifications:
- Thread Size: 7/16‑20" RH
- Underhead Length: 1.000"
- Fastener Yield Strength: 190,000 psi
- Rear Main Seal Style: 2‑piece
- Washers Included: No
- Bolt Material: 8740 chromoly steel
- Bolt Finish: Black oxide
- Head Style: 12‑point

Please Note:
- Follow manufacturer torque sequence and torque specifications using ARP Ultra‑Torque Assembly Lubricant for proper installation.
- Valve covers shown in vendor literature are not included.

Tech Tip: ARP strongly recommends using ARP Ultra‑Torque Assembly Lubricant for accurate and consistent clamping force. Do not use motor oil or low‑quality lubricants. This is due to higher friction on the studs as well as inconsistencies in the clamping force of the fasteners when insufficient lubricants are used.

*Engine Displacement: 221/255/260/289/302/351W/351C/351M/400/360/390/427/428/429