Doc's Diesel Engine Air Filter for Dodge Ram 5.9L Cummins (2003–2007) — DPA5512, Deep-Pleat Media & Silicone Seal

Doc's Diesel DPA5512 is a heavy-duty replacement engine air filter built to protect 5.9L Cummins engines in 2003–2007 Dodge Ram trucks, offering deep-pleat filtration and a durable silicone seal.

When you need dependable airflow protection for an older Ram with a 5.9L Cummins, this Doc's Diesel DPA5512 filter is designed to trap contaminants while preserving engine breathing. It fits vehicles that previously used AF4177 and comparable aftermarket references, and it’s third-party tested for dust capacity—evidence of its rugged performance in dusty or demanding conditions.

How does this filter improve engine protection during tough driving?

The DPA5512 uses deep-pleated filter media to increase the surface area capturing dirt, dust, and debris before they reach the intake. A reinforced silicone gasket creates a tight seal against the housing to minimize bypass and maintain consistent filtration even under vibration.

• Deep pleated paper media for higher contaminant capacity
• Heavy-duty silicone gasket for secure sealing under stress
• Third-party tested dust holding capacity: 344.2 g, 99.25% efficiency

Will it fit my Dodge Ram 5.9L Cummins and which parts does it replace?

This part is specified for Dodge Ram trucks with the 5.9L Cummins engine from model years 2003 through 2007. It’s interchangeable with several common OEM and aftermarket numbers, so it can be used as a direct replacement when your original filter is AF4177 or similar.

• Compatible with Dodge Ram 5.9L Cummins (2003–2007)
• Replaces OEM AF4177 and aftermarket references like Wix 42846 and Baldwin PA4162
• Works as a drop-in swap for Purolator AF45512 and Premium Guard PA5512

How often should I replace this air filter to keep the engine healthy?

Replacement intervals depend on driving conditions and the vehicle manufacturer’s guidance, but general practices help balance protection and cost. In normal driving, changing the filter every 5,000–10,000 miles is common; in very dusty or off-road use, more frequent checks and earlier replacement are recommended.

• Inspect during routine service or oil changes
• Typical replacement window: 5,000–10,000 miles under normal use
• Maximum recommended interval: 12,000 miles unless the manufacturer advises otherwise

What are the measurable performance details and construction highlights?

Doc's Diesel emphasizes a balance of filtration efficiency and longevity. The DPA5512 has been third-party tested for dust-holding capacity and uses durable materials aimed at withstanding heavy use without collapsing or leaking around the seal.

• Third-party tested: 344.2 g dust holding capacity and 99.25% performance metric
• Sturdy paper media with deep pleats for extended service life
• Silicone gasket resists drying and deformation for long-term sealing

Who is this for: The DPA5512 is intended for Dodge Ram owners with the 5.9L Cummins (2003–2007) who want a rugged, cost-effective replacement filter that matches common OEM and aftermarket reference numbers. It’s a practical choice for owners who drive in dusty, construction, or towing conditions and need a dependable, tested filtration option that installs easily as a direct replacement.