PF9908 Fuel Filter and LF17511 Oil Filter Combo - For ISX DD13 DD15

In this review the reviewer tested the PF9908 fuel filter paired with the LF17511 oil filter as a replacement kit for Detroit Diesel ISX applications. The bottom line: this combo is aimed at technicians and fleet owners who need a direct-fit, economical replacement set for ISX DD13, DD15 and DD16 engines, and the single biggest reason to consider it is the broad parts cross-reference coverage that matches many common OEM numbers while offering a simple two-piece package for maintenance cycles.

Key Features

• Cross references: The PF9908 lists multiple reference numbers such as P551063 and FK13834, which helps technicians confirm fitment against older parts lists.
• Oil filter compatibility: The LF17511 includes cross references like P551005 and LF17474, providing reassurance that it matches many known oil filter designations for Detroit Diesel engines.
• Fitment: Designed to be compatible with ISX DD13, DD15 and DD16 engines, so it targets common heavy duty diesel platforms.
• Package contents: The kit ships with one PF9908 fuel filter and one LF17511 oil filter, simplifying ordering for scheduled service events.
• Installation guidance: The included instructions remind users to prime the system and check for leaks, reducing the chance of installation-related problems.
• Support and warranty: A 12-month warranty and lifetime support is offered, which can be useful for fleets that need a point of contact after purchase.

Who It's For

This kit is best for diesel technicians, owner-operators and fleet maintenance managers running Detroit Diesel ISX engines who want a single-order replacement set that covers both fuel and oil service intervals. The product is practical for shops that track parts by cross-reference numbers and need a standard replacement option.

It is not intended for owners seeking original equipment parts or branded OEM filters; the seller notes these are replacement parts and not originals. Buyers who require exact OEM branding or who expect premium construction assurances should consider OEM sources instead.

Pros & Cons

Pros

• Broad cross-reference listings make it straightforward to confirm fitment for ISX DD13, DD15 and DD16 engines.
• Supplies both fuel and oil filters in one package, saving time during routine maintenance.
• Includes installation reminders to prime and check for leaks, which supports correct installation.
• Backed by a 12-month warranty and lifetime support for buyer reassurance.

Cons

• Some customers reported mixed opinions on build quality, so quality perceptions vary compared with OEM items.
• Seller explicitly states these are replacement parts, not original equipment, which may matter for warranty-sensitive operators.

Specifications

Our Verdict

The PF9908 and LF17511 kit is a sensible value option for those maintaining Detroit Diesel ISX engines who prioritize correct cross-reference match and convenience of a combined fuel and oil filter package. It represents a cost-effective replacement choice, though buyers who require verified OEM parts or higher perceived build quality may prefer original branded filters.

Frequently Asked Questions

Are these original OEM parts?
Answer. No, the listing states these are replacement parts and not original equipment.

Will this fit my DD15 engine?
Answer. Yes, the kit is specified as compatible with ISX DD13, DD15 and DD16 engines, but confirm cross-reference numbers against your parts manual.

What should I do after installing the filters?
Answer. Prime the system, start the engine and wait a few minutes, then check for any leaks as advised in the installation instructions.