Baldwin B246 vs Mobil 1 (ExxonMobil / Mann+Hummel) M1-209A: Oil Filter Compatibility

Compare Baldwin B246 and Mobil 1 (ExxonMobil / Mann+Hummel) M1-209A 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.

Baldwin B246 and Mobil 1 (ExxonMobil / Mann+Hummel) M1-209A specifications

How matching is scored

Specification	Baldwin B246 View on Amazon	Mobil 1 (ExxonMobil / Mann+Hummel) M1-209A View on Amazon
Thread size	3/4-16	3/4-16
Gasket OD	71.4 mm	71 mm
Gasket ID	62.7 mm	62 mm
Can OD	95.3 mm	74.19 mm
Height	134.1 mm	120.65 mm
Internal bypass valve	No	Yes
Bypass PSID	Not applicable	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 0.4 mm (Baldwin B246: 71.4 mm, Mobil 1 (ExxonMobil / Mann+Hummel) M1-209A: 71 mm).

Gasket ID differs by 0.7 mm (Baldwin B246: 62.7 mm, Mobil 1 (ExxonMobil / Mann+Hummel) M1-209A: 62 mm).

Baldwin B246 is 13.4 mm taller (Baldwin B246: 134.1 mm, Mobil 1 (ExxonMobil / Mann+Hummel) M1-209A: 120.65 mm) -- check clearance before substituting.

Can OD differs by 21.1 mm (Baldwin B246: 95.3 mm, Mobil 1 (ExxonMobil / Mann+Hummel) M1-209A: 74.19 mm).

Bypass valve presence differs: Mobil 1 (ExxonMobil / Mann+Hummel) M1-209A has one, Baldwin B246 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.