DIAMOND EYE VC400HX40 EXHAUST CLAMP V-BAND CLAMP FOR HX40 STYLE TURBO STAINLESS

DIAMOND EYE VC400HX40 is a stainless 4.0" HX40-style V-band clamp designed to secure the turbine outlet to the downpipe for a tight, leak-resistant seal under high heat and vibration. Ideal for Holset HX40 and select BorgWarner S300 turbos that use the HX40 outlet profile.

FAQ: WILL THIS FIT MY TRUCK?

If your turbocharger has a 4.0" HX40-style turbine outlet, this clamp is the correct interface. Many retrofits on 1994–2002 Ram 2500/3500 5.9L Cummins and S300 variants use the HX40 outlet. Always verify your turbo model and outlet profile before ordering.

FAQ: DO I NEED A GASKET?

No. HX40 V-band joints seal metal-to-metal. Clean both flanges, align carefully, and torque evenly in stages.

FAQ: IS THIS CLAMP STAINLESS?

Yes, it is stainless steel for excellent corrosion resistance and repeatable clamping force through heat cycles.

Fitment Details

• Interface: 4.0" HX40-style turbine outlet to downpipe
• Turbo families: Holset HX40; select BorgWarner S300 variants with HX40 outlet
• Typical vehicles: Builds using HX40/S300 (HX40 outlet) turbos, including many Cummins swaps (verify turbo before purchase)

Cross Reference Items

• Cummins OE HX40 turbine-outlet clamp — 3905216
• Vulcan Performance — HX40CL (aftermarket equivalent style)

Specifications