Mar 31, 2026 · Member Title: Is there anyone with a 1997 to 2003 Cummins ISC 8.3 with over 59000 miles still running with the original style lift pump?

Feb 20, 2026 · Members with the Cummins 6.7 ISB engine on Freightliner chassis report confusion over oil capacity, as the manual often lists 12 quarts, but the dipstick reads low even after filling to that spec.

Sep 5, 2022 · I’m looking to buy an ISL 8.8 or 8.9 engine with the common rail fuel system and without the DEF system. What are the best and worst years to buy? Also, any...

Feb 13, 2010 · The **Cummins ISL 425 HP** (often the ISL9 or ISL 8.9L, depending on year) is generally a **strong, reliable engine**, but like any heavy-duty diesel, it has some known issues …

Jun 29, 2025 · I have a Cummings ISC turbocharged, aftercooled, 8.3L electronic diesel engine, in my 2001 38rp Allegro bus rv. The label for the ecm reads P/N S944125 S/N 1002497 b/c 09/19/00 ESN …

Jun 23, 2025 · I have a 2025 RAM 2500 with the 6.7L Cummins engine and I want to make sure I use the right motor oil and I've always used Shell Rotella. I looked in the owner's manual and searched …

Aug 8, 2025 · I need to swap the ecm on my '22 6.7 Cummins and I want to put a '19 - '21 ecm in it but most of the tuner sites are sold out of that particular ecm...

Jan 27, 2026 · The Cummins® Turbo Diesel engine is equipped with several features designed to assist cold weather starting and operation: The engine block heater is a resistance heater installed in the …

Feb 13, 2023 · Looks great! I'm digging the vent tank, I use a Cummins Fleetguard crankcase ventilation system on mine, but my vintage engine doesn't have a crankcase filter. Shame that Cummins didn't …

Mar 30, 2012 · I have heard others mention some bad years for the big Cummin's diesel called the ISX that produces 600 hp. One member said he was on his third teardown as the valves keep breaking. I …