November 10, 2025
**4W-3027** is the part number for a Caterpillar engine **crankcase breather assembly/vent**, not an oil filter. It is used in various Caterpillar engines and heavy equipment.
**Part Details & Compatibility**
* **Function:** The 4W-3027 is a crankcase breather assembly used to regulate pressure and filter blow-by gases within the engine crankcase.
* **Manufacturer:** This part is manufactured by KBZE
* **Compatible Models:** This assembly is suitable for a variety of Caterpillar engines and machine models, including but not limited to:
* **Engines:** 3116, 3126, 3208, 3412E, 3508, 3508B, 3512C, G3508, G3606B, G3512, 3516, 3516B, 3516C, 3606, 3608, 3612, 3616, 3618
* **Equipment:** Paving Compactor CS-583, Generator Sets SR4, SR4B, Excavators 5130, 5130B, 5230, 5230B, Trucks 776C, 776D
* **Dimensions:** According to information from the G&T Engine Parts website, the approximate dimensions of this component are:
* **Weight:** 1 kg (2.2 lbs)
* **Length/Height/Width:** Approximately 14.3 x 14.3 x 14 cm (5.63 x 5.63 x 5.51 inches)
