Skip to content
Free Standard Shipping on Eligible Orders Over $100 in the Contiguous U.S.
Free Standard Shipping on Eligible Orders Over $100 in the Contiguous U.S.
Search
M37-6275 Genuine Paccar DEF Tank Vent Air Filter

M37-6275 Genuine Paccar DEF Tank Vent Air Filter

P/N: M37-6275 Manufactured by: Paccar
$64.00 - $64.00
$64.00
$64.00 - $64.00
$64.00
3 in Stock
Condition: New
We accept:
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa
Not Sure Which Part Fits?
Our support team is here to help.
+1 (828) 209-8010
Monday – Saturday | 8:00 AM – 8:00 PM (EST)
Fast 2–3 Day Shipping
30-Day Returns
In Stock & Ships Fast
Expert Support Available
2-Year Warranty

At Line Truck Parts LLC, we are committed to providing reliable automotive parts and a transparent customer experience. Eligible parts purchased directly from our website are covered by a 2-Year Limited Warranty, giving you added confidence in your purchase. Learn More

Product Overview

The M37-6275 is a genuine Paccar DEF tank vent air filter designed for Kenworth and Peterbilt truck applications. It filters air entering the DEF tank as fluid is consumed, keeping dirt, dust, moisture, and airborne contaminants from entering the aftertreatment fluid system. 

Product Features

The M37-6275 DEF tank vent air filter is manufactured to Paccar factory specifications for filtering air entering the diesel exhaust fluid tank.

  • Filters incoming air as DEF is consumed and the fluid level inside the tank decreases.
  • Blocks dirt from entering the DEF tank through the ventilation passage.
  • Captures airborne dust before it can contaminate the diesel exhaust fluid.
  • Limits moisture entry through the tank vent connection.
  • Allows filtered air into the tank to support proper venting as DEF is displaced.
  • Helps prevent contaminants from reaching the DEF dosing lines, injectors, and SCR system.

General Specifications

Condition New
Part Number M37-6275
Brand Paccar
Part Type DEF Tank Vent Air Filter


Installation Notes

The M37-6275 installs in the DEF tank ventilation circuit and must be connected in the correct airflow position. Inspect the vent connection and surrounding lines for dirt or moisture before fitting the filter.

Verify part number M37-6275 and the DEF tank vent configuration against the vehicle identification number before installation.