Sourcing Guide
How to compare OTX oil filter seating TO 0001LZ to TO 0008LZ by mounting footprint, filter thread clue, sealing face and old-part photos.
An oil filter seating, also called an oil filter base or housing, is the fixed component that carries the service filter and connects it to the engine oil circuit. It can look simple, yet a similar mounting face alone is not enough to identify the correct replacement. The mounting footprint, thread clue, sealing surface, port arrangement and overall height all need to agree with the removed part.
This guide covers the OTX oil filter seating range TO 0001LZ to TO 0008LZ. It is intended to help buyers prepare a clear matching request for an oil-filter base or housing rather than selecting from a catalog image alone.
A spin-on oil filter can be replaced during routine service, while the seating stays installed on the engine. When the seating itself is being replaced, the filter body is only one clue. Compare the cast base, mounting holes, machined filter face, center thread, gasket surface and any capped connections as one assembly.
A useful photo set includes the front face where the filter mounts, the underside of the mounting plate, the side profile and a close photo of every casting or reference number. Take one wider image before removal when possible so the installed direction is visible.
The catalog records provide the following starting points. They must be checked against the physical part; a reference number or thread description is not, by itself, a guarantee of interchangeability.
| Catalog Code | Current Catalog Clue | Physical Check |
|---|---|---|
| TO 0001LZ | Reference wording requires a clear old-part comparison | Mounting pattern, face diameter and center thread. |
| TO 0005LZ | JX0818 (3438); 80 x 58; 1"-12 thread clue | Confirm the thread and the base dimensions on the removed part. |
| TO 0006LZ | JX0818 (4 #138); 80 x 57; 1"-12 thread clue | Check the one-millimetre height difference and mounting face. |
| TO 0007LZ | Xichai JX1018 (2); 113 x 85; 1 1/8"-16 thread clue | Check the larger face, thread and installed clearance. |
| TO 0008LZ | Xichai JX1018 (tall); 113 x 85; 1 1/8"-16 thread clue | Confirm the height and all base features against the old unit. |
The listed dimensions and thread values are source clues from the catalog. Measuring the removed part remains important, especially where a part is sold in standard and taller forms.
Oil filter seating can be reviewed together with oil filters and other filter bases and housings. For a mixed maintenance order, keep each uncertain seating line marked for confirmation and list the filter codes, quantities and vehicle information separately.
Provide the OTX code when known, all readable OE or casting numbers, front and rear photos of the old seating, measured thread and base dimensions, truck or engine details when available, and the required quantity. This allows the base to be compared on the features that affect installation rather than on a broad part description.
Send an oil filter seating inquiry with the photos and purchase list. The item can then be checked against the documented catalog clues and the physical mounting details before quotation.
Use this guide to organize a clearer quote request instead of choosing from a short product list.
Part number, truck brand, model, engine model, chassis number and old-part photos help confirm the correct replacement before quotation.
Filters, brake parts, clutch parts, chassis parts, cab parts, bearings, sensors and assemblies can be checked together for one practical order.
Share quantity, packing preference and whether the order is for fleet repair, workshop use or distributor stock.
Send part numbers, truck models, chassis numbers, old-part photos or sample photos. We can help check multiple items and combine them into a practical export order.