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Product Information

Rear air cleaner light bars for 1987+ Peterbilt 378, 379, 388 and 389 models with standard air cleaners. The rear air cleaner light bars attach to the brackets between the cab and the air cleaner on both sides. Sold in pairs, each of the rear air cleaner light bars have 6 X3RCG2 LED lights. The bars measure 17.86″ long with a 4.34″ mount. The length refers to the distance between the top of the flange and the bottom of the can. The mount distance refers to the distance between the bottom of the can and the center of the first strap. Lights, harnesses with factory ready plugs and hardware are included. To determine if your air cleaner is standard or premium, please refer to the image below.

For ordering or pricing information, please visit your local Peterbilt dealership.

Standard Can VS. Premium Can

Dieter's will be closed for the holidays from Wednesday, December 24th, 2025, through Friday, January 2nd, 2026. Regular operations will resume on Monday, January 5th. Click here to view contact information.

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