Small Block Ford V8 302 351 Windsor & Ford Cleveland Oil Pan Bolt Kit

Designed for the classic Small Block Ford V8 lineup—including 289, 302, 351 Windsor, and Ford Cleveland engines—this Oil Pan Bolt Kit from Aeroflow Performance delivers a secure, reusable fastening solution that preserves gasket integrity and engine cleanliness. Finished in black with a precision 12-point head, these bolts are built from aircraft-quality 8740 chromoly steel and cold-forged for unsurpassed strength and reliability.

Why this kit stands out

• 12-point head design and hardened washers provide even load distribution, accurate torque readings, and a secure seal even under thermal cycling and engine vibration.
• Reusable construction supports repeated disassembly and reassembly, helping extend gasket life and reduce maintenance downtime.
• Chromoly 8740 steel offers high tensile strength for lasting performance in demanding oil pan applications.

Kit Contents and Specifications

• 18 x 12 Point Bolts for 1/4"-20 thread
  • Under Head Length: 12.85 mm
  • Head Diameter: 13.10 mm
• 4 x 12 Point Bolts for 5/16"-18 thread
  • Under Head Length: 13.70 mm
  • Head Diameter: 15.55 mm
• 18 x Flat Small Washers
  • Outer Diameter: 13.85 mm
  • Inner Diameter: 6.50 mm
  • Thickness: 1.9 mm
• 4 x Flat Large Washers
  • Outer Diameter: 16.65 mm
  • Inner Diameter: 8.20 mm
  • Thickness: 1.9 mm

These oil pan bolts are crafted to hold your pan and gasket securely in place, preventing loosening and maintaining gasket life through engine operation. The combination of small and large washers ensures proper clamping force distribution across the oil pan surface, supporting reliable seal and long-term durability in high-load environments.