3919806 Cummins Aftercooler For 6BT 6BTA5.9L Engines

Product Overview:

The 3919806 is an integrated water-air intercooler core exclusively developed by Cummins for the 6BT5.9 6-cylinder water-cooled turbocharged engine. Designed for construction equipment, Dongfeng 6BT medium trucks and 5.9L generators under dusty, heavy-load, tight-bay conditions, solving clogging, space shortage and heat-induced power drop issues of external coolers.

3919806 Aftercooler Specification:

✅integrated water-cooled core 3919806 saves layout space & simplifies piping.

✅Anti-clog for Dusty Sites:Internal design avoids dust clogging common on exposed air-cooled fins, maintenance-free long-term.

✅High-load Intake Cooling:Cools 130℃ turbo air down under 55℃, boosts power by 15%–20% and cuts NOx emissions.

✅Anti-leak for Vibration:Full copper brazed monolithic structure with dual-layer sealing prevents oil-water mixing under heavy vibration.

Application:

✅Domestic trucks & buses: Dongfeng 153 medium trucks, 6BT cabover coaches, standard repair shop stock part

✅Construction equipment: 5.9L loaders, excavators, rollers, frequent heavy-duty replacement

✅ Fixed power: G5.9 generator sets, mandatory part for continuous stable-temperature running

✅ Export markets: Africa, SE Asia, Middle East large used 6BT fleet, top cross-border aftermarket spare for second-hand machinery & trucks

Why Choose Us?

✅Professional China-based Cummins parts supplier

✅Genuine Cummins quality, strict factory inspection

✅Direct factory supply with competitive cost advantage

✅Stable stock & fast global delivery