FS1098 Fuel Water Separator Filter for Cummins B6.7, ISB6.7, QSB6.7, ISL8.9, L9 Engines, Replaces 5319680, 5308722, FS20038

Description

The FS1098 fuel water separator is a spin-on fuel filter and water separator with a buttress thread, used on Cummins B6.7, ISB 6.7, QSB 6.7 and L9 engines. IXIN Filter manufactures this FS1098 fuel water separator as a factory-direct replacement for the Fleetguard FS1098 and Cummins 5319680, giving distributors, fleets and repair shops a dependable option for scheduled fuel filter replacement.

IXIN has produced filters since 2010 and supplies customers in more than 60 countries. Browse our full range of fuel filters for trucks, buses, construction and agricultural machinery.

FS1098 Fuel Water Separator Specifications

This filter uses a buttress thread, which differs from standard metric threads. Please confirm your filter head and dimensions against your sample or drawing before ordering in bulk.

Compatible Applications

Cross-reference data lists the FS1098 fuel water separator for the following Cummins engines:

• Cummins B6.7, ISB 6.7 and QSB 6.7 (2017 to 2021)
• Cummins L9 and ISL9 (2017 to 2021)
• Cummins ISL 8.9L engines

It is used with filter heads such as FH21462, FH21464 and FH143. Related OE numbers also appear for Doosan, Gehl, JCB and Hyster equipment.

Fit depends on the engine, model year and the filter head installed. Please confirm your engine, model year and the OE number of your existing filter before ordering.

FS1098 Cross Reference / Replacement Numbers

The FS1098 fuel water separator is a cross reference to the following part numbers:

OE and aftermarket part numbers are listed for reference only. All brand names belong to their respective owners, and IXIN is not affiliated with them. FH21462, FH21464 and FH143 are filter head references, not replacement filters. Always confirm fit against your engine before ordering.

Why a Fuel Water Separator Matters

Water and dirt in diesel fuel can damage injectors and high-pressure fuel pumps. A fuel water separator removes free water and fine contaminants before the fuel reaches the engine. Regular replacement helps prevent hard starting, power loss and costly injector repairs, especially on common rail engines that run long hours.

Why Choose IXIN’s FS1098 Fuel Water Separator

• Factory-Direct Supply: IXIN manufactures filters in its own factory in Linxi County, Hebei. You deal with the manufacturer, not a trading company.
• Wide Cross-Brand Coverage: One FS1098 fuel water separator replaces Fleetguard, Cummins, Doosan and JCB references, which helps distributors simplify inventory.
• Popular Engine Family: Cummins B6.7 and L9 engines are widely used in trucks, buses and equipment, so one stock item can serve many customers.
• Customization Available: We support customization of filter paper quality, metal thickness and packaging for your market.
• Fast Delivery: In-stock items usually ship in 5 to 10 days. Made-to-order items take 15 to 45 days, depending on quantity.

To avoid cross-reference mistakes, read our fuel filter cross reference guide before placing a bulk order.

Installation and Maintenance Notes

1. Switch off the engine and let it cool. Close the fuel shutoff valve if fitted.
2. Place a drain pan under the filter, and drain the water from the separator if a drain is fitted.
3. Disconnect the water sensor, if fitted, and remove the old filter with a suitable filter wrench.
4. Check that the old gasket came off with the filter. A leftover gasket can cause leaks.
5. Clean the mounting surface, and lightly oil the gasket of the new FS1098 fuel water separator.
6. Spin the new filter on by hand until the gasket touches, then tighten as specified by the engine manufacturer.
7. Reconnect the water sensor, prime the fuel system according to the engine manual, start the engine, and check for leaks.
8. Replace the filter at the interval recommended by the engine maker, and sooner when using poor-quality fuel.

FAQ

Q: Which part numbers does the FS1098 fuel water separator replace?
A: It is a cross reference to Fleetguard FS1098 and FS20038, Cummins 5319680 and 5308722, Doosan 46652911, Gehl 50220869, JCB 400A0727 and others listed above. Confirm fit before bulk orders.

Q: Is the FH21462 a replacement filter?
A: No. The FH21462 is a filter head (housing) that the FS1098 is used with. Check your filter head before ordering.

Q: What thread does the FS1098 use?
A: It uses a buttress thread with a 119 mm diameter and a 4 mm pitch, which is different from standard metric threads. Make sure your filter head matches before ordering.

Q: Which engines does the FS1098 fuel water separator fit?
A: It is listed for Cummins B6.7, ISB 6.7, QSB 6.7, L9 and ISL9 engines from 2017 to 2021, and ISL 8.9L. Fit varies by engine and model year, so send us your OE number, engine model or a photo of the old filter, and we will help confirm.

Q: Can I order with custom packaging or private label?
A: We support customized packaging, filter paper quality and metal thickness. Contact our sales team with your requirements.

Q: What are the MOQ and lead time?
A: In-stock goods generally ship in 5 to 10 days, and made-to-order items take 15 to 45 days. Get in touch with us for MOQ on the FS1098 fuel water separator.

Need the FS1098 fuel water separator or other heavy-duty fuel filters? Send us the OE number, and we will reply with specifications and a quotation.
Email: sales@ixinfilters.com | WhatsApp: +86 18833443345 | Get a quote