Dorman 904-7903 Engine Crankcase Breather Element

Dorman 904-7903 Crankcase Breather Filter

Dorman 904-7903 is a specific-fit engine crankcase breather element for replacing a cracked, clogged, or missing original filter. It is built with a plastic cartridge housing and a replaceable filter element to match the fit and function of the original equipment design.

Use this replacement when servicing crankcase ventilation on vehicles that call for a Dorman-style breather filter, including applications searched as crankcase breather filter for Chevrolet Silverado and GMC Sierra. The black rectangular housing is sized at 13.3 in. long, 6.5 in. wide, and 2.7 in. high, with a 2.13 in. thickness.

Key Features

• Specific-fit engine crankcase breather element
• Replacement filter housing included
• Rectangular black cartridge design
• Replaceable filter element construction
• Made from materials selected to handle engine oil and heat
• Non-reusable filter element
• Dorman 904-7903 part number for direct identification

Detailed Description

This crankcase ventilation filter is made to restore the original filtration path in the engine breather system when the OE part is damaged or restricted. The cartridge-style housing uses a plastic body and a replaceable filter element, giving you a direct replacement format for service work where the original breather assembly no longer seals or flows correctly. Dorman 904-7903 is a practical choice for technicians and owners looking for a direct-fit crankcase breather filter for Chevrolet Silverado and GMC Sierra applications that use this style of component.

This part cross-references 2869874 and CV 50625 for the same application.

What It Helps Solve

• Cracked crankcase breather filter housing
• Clogged ventilation filter media
• Missing original crankcase breather element
• Restricted crankcase ventilation flow
• Oil vapor filtration issues caused by a worn filter

Installation Notes and Tips

Confirm the original housing shape, mounting style, and dimensions before installation. This is a specific-fit cartridge assembly, so the replacement should match the OE layout exactly. Inspect the surrounding breather system for oil residue, damaged seals, or debris before installing Dorman 904-7903.

Quality Assurance

Dorman designs this replacement crankcase ventilation filter to match OE fit and function using materials intended to withstand engine oil and heat. The part number 904-7903 helps simplify ordering and service verification.