Diesel Oil Filters

Fleetguard AF4878 Magnum RS Primary Air Filter

Name: Fleetguard AF4878 Magnum RS Primary Air Filter
Brand: Diesel Oil Filters
SKU: AF4878
Price: 54.95 USD
Availability: InStock

Heavy-duty radial seal primary air filter designed for demanding diesel engine applications
requiring dependable airflow and extended service life.

SKU:AF4878

Category: Air Filters

$54.95 USD

Sale Sold out

Product Compatibility

Compatible with select heavy-duty diesel engine air intake systems used in:
Commercial trucks
Fleet vehicles
Heavy-duty equipment
Industrial diesel applications

Specification	Value
Part Number	AF4878
Filter Type	Primary Air Filter
Length	12.80 in / 325.20 mm
Largest Outside Diameter	9.29 in / 236.00 mm
Efficiency Test Standard	ISO 5011
Brand	Fleetguard

Magnum RS radial seal primary air filter design
Built for harsh operating environments
Helps reduce airborne contaminant intrusion
Supports consistent airflow and engine efficiency
Heavy-duty construction for long service life
Designed for demanding commercial and fleet applications

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Frequently Asked Questions

Everything you need to know before ordering.

Most diesel engines require oil filter replacement during every scheduled oil change. Always follow the manufacturer's maintenance recommendations.

Fuel filter replacement intervals vary by engine and operating conditions, but many diesel engines require replacement every 10,000–30,000 miles.

You can search by part number, OEM number, engine model, or manufacturer cross-reference. If you're unsure, contact us and we'll help identify the correct filter.

Many diesel engines use a primary and secondary fuel filter system to remove contaminants and protect sensitive fuel injection components.

Yes. Many oil, fuel, air, and coolant filters have equivalent replacements across multiple manufacturers.

Most in-stock orders are processed within one business day and shipped from our warehouse.