Overview

The WIX WS10120 crankcase ventilation filter is built for heavy-duty service on CAT Tier 4 engines and select International truck platforms. Its synthetic media effectively captures oil mist and other contaminants from crankcase gases before they are routed back to the intake or vented, helping maintain cleaner engine plumbing and stable crankcase pressure. This supports modern emissions strategies while helping preserve overall engine performance in demanding on-highway and vocational duty cycles.

Fitment and Specifications

The WS10120 measures 9.95 in height with a 4.56 in (116 mm) top outer diameter and a 0.531 in (13 mm) bottom inner diameter, aligning with the envelope dimensions required for the specified housings. It is commonly applied on International 5900i, 9900i, and ProStar models and is used across fleets standardized on CAT Tier 4 configurations. The robust construction is designed for consistent performance in harsh operating conditions involving vibration, dust, and temperature swings. For reference and ordering control, this filter is known to cross to OEM and aftermarket numbers including Caterpillar 3286272/3805839 and International 3007357C1, as well as Baldwin CV15007, Racor CV5560302, NAPA Gold 220120, and CARQUEST 99476. Specify WS10120 to help keep the crankcase ventilation system clean, reduce oil carryover, and support the proper function of emissions components.