Mobil 1 (ExxonMobil / Mann+Hummel) M1-103A vs WIX 51311: Oil Filter Compatibility

Compare Mobil 1 (ExxonMobil / Mann+Hummel) M1-103A and WIX 51311 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

RISKY

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.

Mobil 1 (ExxonMobil / Mann+Hummel) M1-103A and WIX 51311 specifications

How matching is scored

Specification	Mobil 1 (ExxonMobil / Mann+Hummel) M1-103A View on Amazon	WIX 51311 View on Amazon
Thread size	3/4-16	3/4-16
Gasket OD	70 mm	71.98 mm
Gasket ID	62 mm	62.53 mm
Can OD	68.33 mm	92.99 mm
Height	75.69 mm	85.65 mm
Internal bypass valve	Yes	Yes
Bypass PSID	8 - 11	8 - 11
Anti-drainback valve	Yes	Yes

What matters in this specific comparison

Thread size matches: both are 3/4-16.

Gasket OD differs by 2 mm (Mobil 1 (ExxonMobil / Mann+Hummel) M1-103A: 70 mm, WIX 51311: 71.98 mm).

Gasket ID differs by 0.5 mm (Mobil 1 (ExxonMobil / Mann+Hummel) M1-103A: 62 mm, WIX 51311: 62.53 mm).

WIX 51311 is 10 mm taller (Mobil 1 (ExxonMobil / Mann+Hummel) M1-103A: 75.69 mm, WIX 51311: 85.65 mm) -- check clearance before substituting.

Can OD differs by 24.7 mm (Mobil 1 (ExxonMobil / Mann+Hummel) M1-103A: 68.33 mm, WIX 51311: 92.99 mm).

Both open their bypass valve in a comparable range: Mobil 1 (ExxonMobil / Mann+Hummel) M1-103A at 8-11 psi, WIX 51311 at 8-11 psi.

Open related filters

Before substituting, verify thread fit, gasket sealing dimensions, height clearance, bypass behavior, and anti-drainback requirements for your specific application.