Fuel Spring

The Fuel Spring from K.S.E. Racing is a precision fuel valve spring engineered for high-performance racing fuel systems. This critical component manages bypass return fitting operation, regulating fuel pressure and preventing system overpressurization during demanding engine conditions. Racers and performance tuners rely on OEM-quality fuel springs to maintain consistent fuel delivery and protect sensitive fuel system components from damage caused by pressure spikes.

Manufactured from hardened steel, this fuel valve spring provides reliable spring rate consistency and fatigue resistance across thousands of duty cycles. The spring's compact design—measuring 1.9 inches in length with a 0.45-inch diameter—allows seamless integration into K.S.E. Racing fuel system assemblies without modification to existing bypass return fittings. Steel construction ensures durability under thermal cycling and sustained high-pressure operation, maintaining tension and performance characteristics even after extended track use or high-boost applications.

This replacement spring is essential for anyone rebuilding, servicing, or upgrading a K.S.E. Racing fuel system. Whether you're addressing worn components after heavy racing or assembling a fresh high-flow fuel setup, having genuine OEM springs ensures proper bypass valve function and prevents fuel pressure loss that can compromise engine performance. Each spring is sold individually (SKU KSEKSC1015), allowing technicians and racers to replace worn units without purchasing complete system kits. Compatible with K.S.E. bypass return fittings and fuel pressure regulators across their racing product line.