What engines does the FS1098 filter fit?

Fits Cummins B6.7, ISL8.9, and L9 diesel engines. Replaces OEM part numbers 5319680 and 5308722.

How many miles does each filter last?

Each filter lasts 15,000-20,000 miles. This 2-pack covers 30,000-40,000 miles total.

Does this filter include a PCV valve?

Yes, each FS1098 filter comes with an integrated PCV valve for complete fuel-water separation.

Is this an OEM-quality replacement?

Yes, manufactured to meet or exceed OEM specs. Direct fit, no modifications needed.

How often should I replace the fuel water separator?

Every 15,000-20,000 miles, or every other oil change. Heavy-duty use: replace more frequently.

2-Pack FS1098 Fuel Water Separator for Cummins B6.7 / ISL8.9 — 5319680

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2-Pack FS1098 Fuel Water Separator for Cummins B6.7 / ISL8.9 — 5319680

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SKU: FJ-FS1098-2

$51.99

Shipped today? Order within: Jun 25, 2026 17:00:00 +0800

2-Pack FS1098 Fuel Water Separator for Cummins B6.7 / ISL8.9 — 5319680

2-Pack FS1098 Fuel Water Separator for Cummins B6.7 / ISL8.9 — 5319680

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