100% Genuine SMX Aftercooler for Cummins 6BTA 5.9 330/370 Diamond & QSB 5.9 Engines

** All complete SMX aftercoolers will arrive pre-serviced, hang-on ready! **

Includes Spare O-Ring Kit, Square Gaskets, & Metalube Grease

SMX Core Made to Seaboard Specifications:

Core length has been specifically shortened 0.030”
to increase overall “Core Float” distance which
allows housings to be re-surfaced in cases of heavy corrosion.

SMX Core Made in the U.K.

Heavy Duty Construction & Materials

• Cummins OEM B Core = 11.7 lbs. VS. SMX Core = 13.6 lbs.
• SMX aftercooler housing is cast from ZL109 hi-strength / high-corrosion resistant Aluminum (used in high-performance engine pistons)
• Housing is Hard Anodized to mil-spec Type III (extra thick)
• SS Heli coils in all essential locations
• Improved Endplate Materials to DZR Brass to resist Corrosion & Pitting
• Constructed with Heavy Duty CuNi Tubes