Linkage Kit - 2x4 Sniper EFI - 4150

The Holley Linkage Kit - 2x4 Sniper EFI - 4150 is a precision throttle control assembly engineered for boaters and marine engine builders who demand reliable, smooth acceleration response from fuel-injected outboards and inboard motors. This linkage kit serves as the critical mechanical bridge between your throttle lever and the Sniper EFI fuel injection body, ensuring synchronized fuel delivery and ignition timing across the entire throttle range. Whether you're fine-tuning a performance build or replacing worn factory linkage, this kit restores the direct, confidence-inspiring throttle feel that serious anglers rely on when navigating shallow flats, heavy chop, or tight tournament presentations.

Built from durable steel and featuring complete hardware, the Holley throttle linkage kit includes five rod ends and adjustable rod lengths (5, 7.25, and 8 inches) to accommodate various engine installations and operator station layouts. The dual-rod design minimizes binding and ensures consistent, repeatable throttle actuation under load—critical when you're fighting a big fish or running hard in rough water. Proper linkage geometry prevents fuel delivery lag and maintains the precise air-fuel ratios that the Sniper EFI system calculates, keeping your engine responsive and efficient from idle through wide-open throttle.

This linkage kit is ideal for marine technicians, engine rebuilders, and performance-focused boaters upgrading or servicing Holley Sniper EFI 2x4 carburetor-to-fuel-injection conversions on 4150-pattern throttle bodies. Installation requires basic mechanical skill and takes roughly 30 minutes; the adjustable rod lengths allow you to dial in optimal cable routing and lever geometry for your specific boat layout. If you've recently upgraded to a Sniper EFI system or are experiencing sluggish throttle response, replacing or renewing your linkage kit restores the crisp, linear control that makes every run safer and more enjoyable.