Baldwin BT486 vs WIX 51824: Oil Filter Compatibility
Compare Baldwin BT486 and WIX 51824 oil filters by compatibility, dimensions, thread size, gasket fit, bypass valve, anti-drainback valve status, and match confidence. Use this comparison as a fitment review, not as an automatic substitution guarantee. Both use a 11/2-12 thread.
Quick verdict
Candidate adds internal bypass; usually redundant with engine-mounted bypass · Candidate adds ADBV
- Thread size is the first hard-fit check for any comparison of spin-on filters.
- Gasket OD and gasket ID are the most important seal-related dimensions.
- Height differences can matter for clearance even when thread and gasket fit appear close.
- Bypass and anti-drainback differences may be important, depending on the application.
Baldwin BT486 and WIX 51824 specifications
How matching is scored| Specification | Baldwin BT486 | WIX 51824 |
|---|---|---|
| Thread size | 11/2-12 | 11/2-12 |
| Gasket OD | 126.6 mm | 129.2 mm |
| Gasket ID | 118.3 mm | 119.6 mm |
| Can OD | 128.6 mm | 127.2 mm |
| Height | 177 mm | 174.5 mm |
| Internal bypass valve | No | Yes |
| Bypass PSID | Not applicable | 12 - 15 |
| Anti-drainback valve | No | Yes |
What matters in this specific comparison
Thread size matches: both are 11/2-12.
Gasket OD differs by 2.6 mm (Baldwin BT486: 126.6 mm, WIX 51824: 129.2 mm).
Gasket ID differs by 1.3 mm (Baldwin BT486: 118.3 mm, WIX 51824: 119.6 mm).
Baldwin BT486 is 2.5 mm taller (Baldwin BT486: 177 mm, WIX 51824: 174.5 mm) -- check clearance before substituting.
Can OD differs by 1.4 mm (Baldwin BT486: 128.6 mm, WIX 51824: 127.2 mm).
Bypass valve presence differs: WIX 51824 has one, Baldwin BT486 does not.
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.