Indmar Marine Oil Filter – GM 22mm Single | Part #872024

Protect your GM-based Indmar marine engine with this genuine Indmar 22mm single oil filter. Precision engineered for GM marine engine applications requiring the 22mm thread specification — correct filter sizing is critical for a leak-free seal and proper oil system function. Never substitute an incorrectly sized filter — an improper thread fit risks oil leaks, filter bypass, and catastrophic engine damage.

Compatible with: Indmar GM marine engines requiring 22mm single oil filter fitment on Malibu, Moomba, Supra, and Tige boats. Contact us to verify fitment for your specific model year 

What does the 22mm specification mean?
The 22mm designation refers to the thread diameter of the oil filter mounting base — the point where the filter threads onto the engine block. GM marine engines use different thread specifications across their engine families and getting the correct size is essential:

• An undersized filter will not thread correctly and will leak immediately
• An oversized filter will cross thread and damage the engine block filter mount
• An incorrect thread pitch risks the filter working loose under oil pressure
• Always confirm your engine's filter thread specification before ordering

How do I know if my engine needs the 22mm filter?
Check your engine service manual or current filter specification. If you are unsure contact us with your engine serial number and we will confirm the correct filter for your specific GM Indmar engine before you order.

What's the difference between a marine oil filter and an automotive one?
Marine engines operate in a fundamentally different environment to car engines:

• They run at sustained high loads for longer periods on the water
• They experience constant vibration and movement underway
• They operate in humid, wet, and sometimes salt-influenced conditions
• They often sit unused for months over winter then work intensively all summer

A genuine Indmar marine oil filter is built to handle these unique demands. Using a cheap automotive filter as a substitute risks premature filter bypass, inadequate filtration, and in worst cases complete filter failure — leading to catastrophic engine damage. Always use the correct OEM marine specification filter.

How often should you replace it?
Replace your oil filter at every oil change — typically every season or every 50 hours of operation. Never reuse an old filter with fresh oil — a contaminated filter will immediately dirty your new oil and completely defeat the purpose of the service.

Signs it's time for an oil and filter change:

• Dark, dirty, or gritty oil on the dipstick
• Increased engine noise or ticking at startup
• Oil pressure fluctuating or running lower than normal
• Approaching 50 hours since last service
• Pre-season service due before summer

Pro tip: Always pre-fill your oil filter with fresh oil before fitting — this eliminates the brief period of low oil pressure on startup while the filter fills, reducing wear on your engine bearings on first start after a service. On a 22mm thread filter take extra care not to cross thread on installation — hand tighten first to confirm correct thread engagement before using a filter wrench to final tighten.

Pairs perfectly with:

• 556003 – Fuel Filter EFI All Models
• 685007 – Raw Water Pump Impeller
• 685008 – Impeller Pump Gasket Johnson

Features:

• Genuine Indmar OEM part
• 22mm thread specification for correct GM marine engine fitment
• Single filter configuration — direct OEM replacement
• Superior marine grade filtration vs automotive alternatives
• Higher pressure rating for marine oil system demands
• Reinforced construction for marine vibration and movement
• Direct replacement — no modifications needed

Part Number: 872024
In stock and shipped fast from Australia 🇦🇺