Banks Power 01-04 Chevy 6.6L LB7 Ram-Air Intake System - Dry Filter
The Banks 42132-D is a Ram-Air cold air intake with a dry, reusable filter for 2001-2004 Chevrolet Silverado and GMC Sierra heavy duty pickups with the first generation 6.6L Duramax LB7. Owners usually shop for it when an older LB7 runs hot on exhaust temperature while towing, puffs black smoke on a hard pull, or still has a tired factory air box with a cracked tube. It replaces the stock housing and tubing with an enclosed box that breathes outside air instead of hot underhood air.
A turbo diesel makes power from air mass, and air that has soaked in engine bay heat is thin. The Banks design closes the filter inside a box so it is not fed by the air coming off the engine and radiator, and it pulls from a cooler source in front of the engine. Banks states the system outflows the stock intake by up to 57 percent. More dense air for the same fuel is what lowers exhaust gas temperature and cuts soot. The intake tube uses a bellows section so it can flex with the engine on its mounts rather than cracking at a joint, and Banks says the design is meant not to set fault codes. Banks also offers an optional Super-Scoop that rams extra air into the box.
Heat is also the main enemy of the five-speed Allison 1000 behind the LB7. Before you blame the engine for slow or soft pulls, rule out the transmission with our Allison 1000 limp mode causes guide and the Allison 1000 TCC shudder diagnosis guide.
Confirm the engine is the LB7 using the engine code in the VIN or the RPO code on the glove box label, because the 2004.5 trucks with the LLY use a different Banks kit. Pull the stock tube off the turbo inlet and look for oil in the tube, which points at crankcase breather issues an intake will not fix. Check your scan tool for stored codes so you know the starting point. If smoke or EGT is high even with a clean filter, have the injectors checked; a new intake helps air supply but does not repair a leaking injector.
Fits 2001-2004 Chevrolet and GMC 2500HD and 3500 pickups with the 6.6L Duramax LB7. California Air Resources Board Executive Order D-161-102 listed 42132-D for 2001-2004 GM pickups with the Duramax LB7 6.6L, and the copy on file is marked rescinded, so California owners should confirm its current status with the state before installing. The 2004-2005 LLY, 2006-2007 LLY/LBZ and 2007-2010 LMM engines each use their own Banks part number. If your truck is a 2004 and you are not sure whether it has the LB7 or LLY, send us the VIN. An oiled filter version, 42132, is also available, and transmission parts for these trucks are in our Allison 1000 collection.
For towing trucks, pair the intake with a healthy transmission service using the Allison 1000 filter and gasket kit and our Allison 1000 fluid and filter service specs. On a high mileage LB7 the 5-speed Allison solenoid kit is another common repair.
| Brand | Banks Power |
| Part number | 42132-D |
| Fits | Banks Power 01-04 Chevy 6.6L LB7 Ram-Air Intake System - Dry Filter |
| Type | Short Ram Air Intakes |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
No. Those trucks have the LLY engine, which uses a different Banks Ram-Air kit. This one is only for the 2001-2004 LB7. If you are unsure which engine you have, send us the VIN.
Both are the same Ram-Air system for the LB7. The 42132 comes with an oiled filter element and the 42132-D comes with a dry element that is cleaned without oil.
Banks states it reduces EGT and smoke by feeding the turbo cooler, denser outside air, with up to 57 percent more flow than stock. Results depend on tune, injectors and load.
It does not need a tuner. Banks says the system is designed not to cause fault codes, and the CARB approval is based on the factory calibration.
CARB Executive Order D-161-102 listed 42132-D for 2001-2004 LB7 pickups, but the copy on file is marked rescinded. California owners should verify current status before installing.
Tap out loose dirt, spray dry filter cleaner on both sides, soak about 10 minutes, rinse with cool or warm water from the clean side out, and air dry. Never use gasoline or a pressure washer.
