Speedmaster Ford SB 289 302 351 Windsor Rocker Stud Girdle Kit Black with 7/16" Polylock Nuts

The Speedmaster Ford SB 289 302 351 Windsor Rocker Stud Girdle Kit is engineered to secure and stabilize rocker arm studs on small-block Ford Windsor engines. This black girdle assembly with 7/16" polylock nuts provides a rigid mounting solution that helps maintain proper rocker arm geometry and reduces flex during high-RPM operation, critical for performance and reliability in street and racing applications.

Designed specifically for 289, 302, and 351 Windsor engine blocks, this kit delivers the fitment precision and durability expected in Speedmaster's engine performance parts. The polylock nuts ensure secure fastening without loosening under vibration. Ideal for engine rebuilds, performance upgrades, and restorations where maintaining exact rocker arm alignment is essential.

Key Features & Benefits

• Ford Windsor Engine Fitment: Engineered for 289, 302, and 351 cubic-inch Ford small-block Windsor engines.
• Polylock Nut Fastening: Includes 7/16" polylock nuts that resist vibration loosening.
• Black Finish: Corrosion-resistant black coating for durability and appearance.
• Stud Girdle Assembly: Rigid girdle design stabilizes rocker arm studs and maintains precise alignment.

Specifications

Ideal Applications

• Small-block Ford engine rebuilds and restorations
• Street and strip performance engine upgrades
• High-RPM engine applications requiring rocker arm stability
• Ford Windsor engine maintenance and repair