Rear Drive Adapter KSE Tandem X

The Peterson Fluid Rear Drive Adapter KSE Tandem X (Part Number 14-2190) is a precision aluminum adapter engineered to connect fuel pump drive outputs to Peterson's R4 dry sump pump systems. This compact adapter bridges the mechanical interface between aftermarket fuel delivery and advanced sump circulation, enabling seamless integration in racing and high-performance engine builds where dual-stage fuel management is critical. Constructed from aluminum for lightweight durability, the adapter delivers the mechanical reliability required in sustained high-RPM environments.

Measuring 2.55 x 0.65 x 2.75 inches and weighing just 0.09 lbs, the KSE Tandem X adapter is designed for minimal installation footprint while maintaining the rigidity necessary for consistent drive engagement. The natural aluminum finish provides corrosion resistance suitable for typical engine bay environments, and the precision engineering ensures proper rotational alignment between fuel pump and dry sump pump shafts. This adapter is a direct-fit solution for builds standardized on Peterson's R4 sump system architecture, eliminating custom fabrication or adapter stacking that could introduce vibration or mechanical play.

The Rear Drive Adapter KSE Tandem X is essential for engine builders and race teams implementing dual-pump fuel systems or transitioning from carburetor-fed fuel delivery to modern dry sump architecture. It serves applications where OEM fuel pump bosses are adapted to drive Peterson's engineered sump pumps—common in vintage muscle car restorations, LS engine swaps, and purpose-built race engines where centralized oil scavenging and pressurization demand dedicated mechanical inputs. This adapter eliminates guesswork in multi-pump layouts and ensures the R4 pump receives consistent, direct drive without electronic complexity.