The 68RFE solenoid pack is the most-replaced part on Cummins-equipped Rams. Both Rostra and Sonnax sell quality replacements — pick based on duty cycle.
Direct OE-spec replacement. Made in USA. Comes pre-loaded with all solenoids matched and pressure-tested. Best for: shops that need to swap once and forget — the most-installed 68RFE pack in independent transmission shops.
HD version with reinforced springs and machined valves. Built for Cummins trucks that tow heavy or have been tuned for more power. Best for: 6.7L trucks running deletes, tuning, or 12,000+ lb trailers.
Rostra: Solves OEM solenoid sticking and pressure drift.
Sonnax: Solves the above PLUS handles 50-80 psi above OE line pressure without leakage.
Rostra: $400-500. Sonnax: $500-650. For a stock Cummins, Rostra is sufficient. For a tuned or tow-heavy truck, Sonnax pays for itself by surviving longer.
Direct-from-the-pro pricing. Free shipping over $75. Same-day handling Monday-Friday.
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