GXFCY Fuel & Oil Filter Kit PF9908/LF17511/FS19915 — 3‑Piece Diesel Replacement for ISX/DD13/DD15

GXFCY PF9908 / LF17511 / FS19915 is a replacement fuel, oil, and fuel-water-separator filter kit engineered to match common OEM references for ISX and Detroit Diesel engines.

This three-piece filter set combines a fuel filter (PF9908), an oil filter (LF17511), and a fuel-water-separator (FS19915) to help keep fuel and lubrication systems cleaner and running reliably. Each element is built as a compatible aftermarket replacement (not original OEM) and cross-references numerous part numbers so you can confirm fitment with your engine service manual. The kit is intended for heavy-duty diesel applications such as ISX, DD13, DD15 and DD16 engines where scheduled filtration maintenance is critical.

How do I know these filters fit my engine?

Each filter in the kit lists multiple cross-reference numbers used by common manufacturers, making it easier to match the part you need. Verify the listed reference numbers against your vehicle’s current filters, parts manual, or dealer confirmation before purchasing.

• Compatible with ISX, DD13, DD15 and DD16 Detroit Diesel engines.
• Cross-references include P551063, A4720921205, LF17474 and others.
• Designed as replacement parts—confirm against your OEM part number.

What should I do during installation to ensure proper operation?

Follow standard filter-installation practices: remove the old element, clean the mounting surface, install the new filter, prime the fuel system if applicable, and check for leaks after startup. Never reuse the old filter element, and allow the engine to run briefly to verify proper sealing.

• Dispose of used filters responsibly; do not reuse old elements.
• Prime the fuel system after installing the new filter before full operation.
• Start the engine, wait a few minutes, then inspect for leaks or abnormal noises.

How often should these filters be replaced?

Replacement frequency depends on operating conditions, fuel quality, and manufacturer maintenance schedules. Regular replacement prevents accelerated wear—neglecting filtration can lead to increased mechanical wear and reduced fuel system performance.

• Follow your engine manufacturer’s recommended service intervals.
• Shorten intervals under dusty, wet, or poor-fuel conditions.
• Monitor fuel-water separator bowl and drain water as needed.

What support and warranty come with the kit?

GXFCY provides a 12-month warranty and ongoing lifetime support for this replacement filter kit. Contact customer service with product questions or fitment concerns; keep proof of purchase handy for warranty claims.

• 12-month limited warranty included.
• Lifetime technical support from GXFCY for fitment or installation questions.
• Note: these are replacement parts, not OEM originals.

Who is this for: This filter kit is intended for fleet operators, mechanics, and owner-operators who service heavy-duty diesel trucks powered by Cummins ISX or Detroit Diesel DD13/15/16 series engines and who need dependable, aftermarket replacement filter elements. It’s a practical choice when you want broad cross-reference compatibility, clear installation guidance, and warranty-backed aftermarket support.