Diaphragm Spring Cap for Precise Raptor Tuning - Superseded by 690766

Ever wondered what keeps your carburetor's diaphragm under perfect tension? The Diaphragm Spring Cap (SKU 555113), now superseded by 690766 in Briggs Raptor engines, provides that exact control. It secures the spring, allowing consistent pressure that translates to smooth fuel pulses during high-speed runs.

This small but mighty component helps fine-tune your engine's sensitivity, making it easier to hit peak performance without constant recalibration. Racers find it invaluable for maintaining organization at the track— one cap ensures your setup stays dialed in, avoiding sloppy mixtures that slow you down. Upgrade to this for a more forgiving throttle that rewards aggressive driving.

• Stabilizes spring action for even fuel delivery.
• Simplifies maintenance in Raptor flathead systems.
• Enhances overall engine reliability under race stress.