WIX WL7503 vs Baldwin B1444: Oil Filter Compatibility
Compare WIX WL7503 and Baldwin B1444 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 3/4-16 thread.
Quick verdict
Both use a 3/4-16 thread.
- 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.
WIX WL7503 and Baldwin B1444 specifications
How matching is scored| Specification | WIX WL7503 | Baldwin B1444 |
|---|---|---|
| Thread size | 3/4-16 | 3/4-16 |
| Gasket OD | 70.99 mm | 71.4 mm |
| Gasket ID | 61.98 mm | 62.7 mm |
| Can OD | 77 mm | 76.2 mm |
| Height | 78 mm | 72.2 mm |
| Internal bypass valve | Yes | Yes |
| Bypass PSID | 14 | 8 |
| Anti-drainback valve | Yes | No |
What matters in this specific comparison
Thread size matches: both are 3/4-16.
Gasket OD differs by 0.4 mm (WIX WL7503: 70.99 mm, Baldwin B1444: 71.4 mm).
Gasket ID differs by 0.7 mm (WIX WL7503: 61.98 mm, Baldwin B1444: 62.7 mm).
WIX WL7503 is 5.8 mm taller (WIX WL7503: 78 mm, Baldwin B1444: 72.2 mm) -- check clearance before substituting.
Can OD differs by 0.8 mm (WIX WL7503: 77 mm, Baldwin B1444: 76.2 mm).
Both open their bypass valve in a comparable range: WIX WL7503 at 14-14 psi, Baldwin B1444 at 8-8 psi -- these ranges do not overlap.
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.