Heavy Duty Engine Air Filter | Replacement Napa 6637 Fleetguard AH1141 Fram CA6818
SKU:: TR531-EF
Description
High-Quality TORQUE Engine Air Filter – TR531
The TORQUE Air Filter TR531 is a premium replacement air filter engineered to deliver reliable airflow, effective filtration, and long engine life. Designed to meet or exceed OEM specifications, this filter helps protect your engine from harmful contaminants while maintaining optimal performance.
FITMENT & COMPATIBILITY
To ensure proper fitment, please message us your VIN number and we will confirm compatibility for your vehicle. Alternatively, you may contact your dealer for the OEM part number and cross-reference it with the part numbers listed below.
SPECIFICATIONS
- Height: 12.38 in
- Outer Diameter: 8.5 in
- Inside Diameter (Top): Closed
- Inside Diameter (Bottom): 4 in
COMPATIBLE ENGINES
- Cummins 6BTA 5.9L
REPLACES / CROSS-REFERENCE PART NUMBERS
- Fleetguard: AH1141
- Luberfiner: LAF2533
- Baldwin: PA2818
- WIX: 46637
- NAPA: 6637
- Cummins: 3912020, 2912986
- Kralinator: LA1458
- FRAM: CA6818
FEATURES & BENEFITS
- High-efficiency filtration for cleaner air intake
- Helps protect engine components from dust and debris
- Maintains proper airflow for optimal engine performance
- Durable construction for long service life
- Direct replacement – no modifications required
Upgrade your engine’s air intake system with the TORQUE Air Filter TR531 for dependable protection, improved performance, and OEM-quality fit.
Shipping
We take great care in preparing and delivering your order.
Processing Time
Orders are usually processed within one business day. After your order has been shipped, you will receive a shipping confirmation email. Tracking information may be included when available.
Estimated Delivery
Most orders arrive within 3-5 business days. Delivery times may vary depending on your location and the carrier's operational schedule.
Shipping Rates
Shipping costs are automatically calculated at checkout, based on your location and the selected delivery method.
Returns
Your satisfaction is our top priority, and we want you to feel confident shopping with us. If something isn't right, you can request a return or refund within 30 days of delivery.
How to Start a Return
Just contact our support team and we will guide you through the process. We will make sure it is simple and hassle-free.
Refunds
Once we have processed your return, your refund will be issued to the original payment method, typically within 5-10 business days.
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Protect Engine Components
Traps dust and debris to reduce engine wear and extend component life. Built to deliver dependable filtration under demanding highway, vocational, and everyday operating conditions.

Consistent airflow
Traps dust and debris to reduce wear.
Engine protection
Traps dust and debris to reduce wear.
Consistent airflow
Supports stable power and efficiency.
Consistent airflow
Supports stable power and efficiency.
Easy installation
Drop-in replacement. No modifications needed.
OEM-style fit
Matches OEM sizing for easier installation
Easy installation
Drop-in replacement. No modifications needed.
Easy installation
Drop-in replacement. No modifications needed.


Engineered from the inside out
Layered construction balances efficient airflow with lasting structural strength for dependable engine operation mile after mile.


Simplify maintenance schedules
Make routine engine maintenance easier with a direct-fit air filter designed for quick, straightforward replacement.
