Caterpillar OEM Primary Engine Air Filter — Part Number 526-3118 Brand: Caterpillar (CAT) | Condition: New Old Stock (NOS)
You are purchasing a genuine Caterpillar OEM Primary Engine Air Filter, part number 526-3118. This is an authentic factory original part — never installed, never used. Designed for CAT C2.4 and C3.3B engines used in mini hydraulic excavators and compact equipment, this primary air filter is your engine's first and most critical line of defense against dust, dirt, and airborne debris — protecting fuel injectors, pistons, and cylinder walls from premature wear.
Condition Details: This is a New Old Stock (NOS) part. The air filter itself is in new, uninstalled condition. As is common with NOS inventory, the original packaging may show signs of age, including shelf wear, dust, or minor cosmetic blemishes on the bag or box. The part is new and fully functional.
Compatible Models / Applications:
Mini Hydraulic Excavators: 304, 305, 305 CR, 305.5 CR, 305.5 GC, 306, 306.5, 307, 307.5, 308, 308 CR, 308 SR, 308.5, 309, 309 CR, 310
Skid Steer Loaders: 226D3, 232D3, 239D3, 249D3
Compact Track Loaders: 239D3
Engines: CAT C2.4, C3.3B
Part Number / Supersede Information:
Primary OEM Part Number: 526-3118
Also referenced as: 5263118, CA5263118
Cross-Reference Numbers: JM-1100, FA1431
Often sold as a kit paired with secondary filter 526-3122
We recommend verifying current supersede numbers through your local Caterpillar dealer or the official CAT parts catalog prior to ordering.
Why Choose OEM Parts? OEM parts are engineered and manufactured to exact factory tolerances, ensuring a precise fit, reliable performance, and long service life. Unlike aftermarket alternatives, OEM parts are designed specifically for your equipment — no modifications, no guesswork.
Returns: We proudly offer hassle-free returns. If you are not completely satisfied with your purchase for any reason, simply open a return request through eBay within 30 days of purchase and we will take care of you promptly.
Thank you for choosing QBS Parts Inc! We truly appreciate your business. If you have any issues whatsoever with your order, please give us the opportunity to resolve it before leaving feedback — we are committed to making every transaction a great experience.
Please verify fitment using your equipment's model and serial number before purchasing. Feel free to message us with any questions — we're here to help!
