Piston Spring (Yellow) - Ball Bearing Chambers | AUD 4398

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Genuine SU piston spring — Yellow — for ball-bearing suction chambers. Spring weight: medium-heavy. The piston spring controls the rate at which the piston rises in response to air flow. Spring selection affects mixture richness and throttle response — choose the correct colour for your application. Manufactured by Burlen to original SU specification. Part Number: AUD 4398 Show more