4 Steps to Reverse-Match an Unlabeled Filter

When part numbers fade, use a digital caliper to take these 4 key measurements:

Step 1: Thread Size ──► Step 2: Gasket ID/OD ──► Step 3: Canister OD ──► Step 4: Height

Thread Size & Pitch (Most Critical): Measure thread diameter and distance between threads (e.g., M20 × 1.5 or 1"-14 UNS).
Gasket Inner & Outer Diameter: Measure the rubber seal's inside (ID) and outside (OD) edges to ensure a leak-free fit.
Canister Outer Diameter: Measure the widest part of the metal housing to check bracket clearance.
Overall Height: Measure from the top mounting base down to the bottom dome.

Key Measurement Reference

1. Parameter	What to Measure	Example
Thread	Diameter + Thread Pitch	M27 × 2.0 or 1"-14 UNS
2. Gasket	Rubber Seal OD / ID	72 mm / 62 mm
3. Canister	Metal Body Diameter	93 mm
4. Height	Top Base to Bottom Dome	175 mm

📩 Need Help Matching Faded Filters?

At CHINA EVERLASTING PARTS CO., LTD, send us your caliper measurements or equipment model, and our technical team will cross-reference the exact OEM specification for Caterpillar, Cummins, Komatsu, and Volvo engines.