Fleetguard LF3947 vs Fleetguard LF3652: Oil Filter Compatibility
Compare Fleetguard LF3947 and Fleetguard LF3652 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
Bypass presence unknown on one or both filters · ADBV unknown on one or both filters
- 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.
Fleetguard LF3947 and Fleetguard LF3652 specifications
How matching is scored| Specification | Fleetguard LF3947 | Fleetguard LF3652 |
|---|---|---|
| Thread size | 3/4-16 UNF-2B | 3/4-16 UNF-2B |
| Gasket OD | 71.98 mm | 71.6 mm |
| Gasket ID | 62.53 mm | 62.59 mm |
| Can OD | 93 mm | 108 mm |
| Height | 177 mm | 169 mm |
| Internal bypass valve | Unknown | Unknown |
| Bypass PSID | 10 | Unknown |
| Anti-drainback valve | Yes | Unknown |
What matters in this specific comparison
Thread size matches: both are 3/4-16.
Gasket OD differs by 0.4 mm (Fleetguard LF3947: 71.98 mm, Fleetguard LF3652: 71.6 mm).
Gasket ID differs by 0.1 mm (Fleetguard LF3947: 62.53 mm, Fleetguard LF3652: 62.59 mm).
Fleetguard LF3947 is 8 mm taller (Fleetguard LF3947: 177 mm, Fleetguard LF3652: 169 mm) -- check clearance before substituting.
Can OD differs by 15 mm (Fleetguard LF3947: 93 mm, Fleetguard LF3652: 108 mm).
Open related filters
Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.