Haltech Nexus R3 Engine Control Module HT-193200 3552024-23- XL They feature an O-ring design

They feature an O-ring design for an improved seal

24 in Diameter

C4 StreetFighter Converter for 26-Spline In-Case Dipstick

351 in Bore

Haltech Nexus R3 Engine Control Module HT-193200 3552024-23- XL They feature an O-ring designProduct Description: Engine Control Module Nexus R3 Wiring Harness Included Universal With a worldwide presence and a wide range of control products for racing vehicles, Haltech is a leader in aftermarket ECU and VCU modules, harnesses, sensors, and more. From basic control units to advanced systems with virtually limitless customization capabilities, Haltech products are designed for ease of use and installation.