The 68RFE OEM converter is the #1 weak point on 2007.5-2018 Cummins trucks. Any 6.7L Cummins that tows fifth wheel, gooseneck, or runs tuning needs a billet converter — not OE reman, not a cheap aftermarket.
OE 68RFE converter uses a single-disc TCC. Cummins torque exceeds the friction surface capacity once you add tuning OR tow load OR both. Result: TCC slips, generates heat, glazes within 30,000-60,000 miles in service.
Suncoast Triple-Disc: $1,200-1,500. Industry standard for stock-to-mild Cummins tow rigs.
BD Triple-Disc: $1,400-1,800. Slightly higher clamp load, popular on tuned trucks.
Goerend Triple-Disc Heavy: $1,800-2,400. For competition pulling and ultra-heavy tow.
OE reman: $400-600. Replacing OE with OE on a tow rig = comeback within 30k miles. Replacing OE with billet = lifetime fix. Math is simple.
Replace the front pump bushing at the same time. Inspect input shaft splines. ALWAYS replace the input shaft with a billet version if you are upgrading the converter on a tuned truck — OE input shaft snaps under billet converter clamp load above 600 ft-lbs.
If you are putting in a billet converter, also plan for: billet input shaft, valve body rebuild with HD pressure regulator springs, solenoid pack (Sonnax HD), pressure boost (TransGo or Sonnax kit). Total tuned-truck rebuild: $4,500-6,500 done right.
Direct-from-the-pro pricing. Free shipping over $75. Same-day handling Monday-Friday. 30-day returns.
Shop the collection →