Give your 1989–1993 Dodge 5.9L 12V Cummins the confidence and control it needs with Norcal Diesel Performance’s curated lineup of automatic transmission parts for 1st Gen Dodge Ram 12V, which is built to tow harder, run cooler, and last longer. Upgrade to deep transmission pans from PPE Diesel and ATS Diesel Performance to boost fluid capacity and cooling for steadier temps on long pulls. Sharpen shift quality and clutch apply pressure with BD Diesel valve body kits, or go all‑in with complete automatic transmission assemblies engineered to handle added torque from fueling and turbo mods. Put power to the ground efficiently with BD Diesel torque converters that improve stall characteristics and reduce slip, and keep heat in check with high‑efficiency transmission oil coolers designed for demanding conditions. Whether you’re restoring a first-gen workhorse or building a weekend tow rig, our selection from BD Diesel, PPE Diesel, and ATS Diesel Performance delivers reliability, performance, and peace of mind, so every shift feels stronger, smoother, and ready for the next mile.
