Fleetguard FF5776 Fuel Filter 6-Pack OEM Cummins ISX ISX15 QSX 2893612

Fleetguard FF5776 Fuel Filter 6-Pack — Genuine OEM for Cummins ISX, ISX15, ISX12 & QSX Diesel Engines

The Fleetguard FF5776 6-Pack is a box of six genuine Cummins Filtration secondary spin-on fuel filters engineered for Cummins ISX, ISX15, ISX12, and QSX heavy-duty diesel engines. Buying a 6-Pack means you have a full year of filter changes covered (at a 25,000-mile replacement interval, 6 filters covers approximately 150,000 miles of operation). Each OEM-quality filter uses StrataPore media technology rated at 5 microns to capture 98.7% of harmful contaminants before they reach your high-pressure common-rail fuel injection system, protecting injectors from abrasive wear and ensuring clean, dry fuel delivery for optimal engine performance.

Designed with a heavy-wall steel housing and M90 x 2.0 mounting thread, the FF5776 provides superior durability under extreme operating conditions. This 6-Pack is the smart choice for fleet managers, owner-operators, and diesel mechanics who want to stock up and save — buying a case of 6 means fewer orders, lower per-filter cost, and uninterrupted maintenance schedules. Trusted across North America for Freightliner, Kenworth, Peterbilt, International, Western Star, and Volvo trucks powered by Cummins ISX engines.

Technical Specifications

Specification	Value
Part Number	FF5776
Brand	Fleetguard (Cummins Filtration)
Filter Type	Secondary Spin-On Fuel Filter
Media Type	StrataPore
Micron Rating	5 Microns (SAE J 1985)
Filtration Efficiency	98.7%
Overall Height	226.52 mm (8.918 in)
Largest Outside Diameter	119.89 mm (4.72 in)
Thread Size	M90 x 2-7H INT
Gasket Material	Rubber
Housing Material	Heavy-Wall Steel
Placement	Secondary / Engine-Mounted

Compatible Cummins Engines

Engine	Configuration	Application
ISX15	CM2250, CM2250 SN, CM2350 X101	Class 8 On-Highway Trucks
ISX12 / ISX11.9	CM2250, CM2350 X102	Class 8 On-Highway Trucks
QSX11.9	CM2250 ECF	Industrial / Off-Highway
QSX15	CM2250, CM2250 X115, CM570	Industrial / Marine / Power Gen
X15	CM2350 X125M	2017+ Class 8 Trucks
ISX (2010+)	15L and 16L variants	All ISX-powered trucks (2010+)

Note: For 2020+ X15/X12 engines requiring extended service intervals, Fleetguard recommends the upgraded FF5825NN (NanoNet media). The FF5776 and FF5825NN share the same M90 x 2.0 mount and are physically interchangeable.

Compatible Trucks & Equipment

Truck Brand	Models	Years
Freightliner	Cascadia, Coronado, CC122, CC132	2010-2019
Kenworth	T680, T800, T880, W900, C500, C550, T2000	2010-2019
Peterbilt	367, 384, 386, 387, 388, 389, 579, 587	2010-2019
International / Navistar	ProStar, LoneStar, PayStar 5900i, 9900i, HX620	2012-2017
Western Star	4700, 4800, 4900, 6900	2010-2019
Volvo	VNL Series (with Cummins ISX)	2010-2019

Cross-Reference Part Numbers

Cross-Reference	Brand
2893612	Cummins
2864993	Cummins
3685306	Cummins
4331007	Cummins
5365988	Cummins
5599456	Cummins
BF9885	Baldwin
P555776	Donaldson
DBF6776	Donaldson
LFF6776	Luber-Finer
WK12003	Mann
WF10123	Wix
FF1219	Hastings
H723WK	Hengst
SN40635	HIFI
P11328	Parker Racor
600123	Fleetguard Internal

When to Replace

Replace the FF5776 every 25,000-40,000 miles or at each oil change interval, whichever comes first. Signs your fuel filter needs replacement include loss of power under load, extended cranking on start-up, fuel-restriction or low-suction-pressure fault codes, and reduced fuel economy.

What's Included

6x Fleetguard FF5776 Fuel Filters with O-Rings — packed in one factory-sealed Fleetguard box. Each filter is individually sealed for freshness. You receive a full case of 6 genuine Fleetguard filters, not aftermarket or repackaged units.

Why Choose Genuine Fleetguard?

Fleetguard is the filtration division of Cummins Inc., the manufacturer of the ISX, ISX15, and QSX engines. When you install a Fleetguard FF5776, you are using the exact same filter that Cummins designs, tests, and approves for their engines. Aftermarket alternatives may fit the same mount but often use inferior media that allows more contaminants to reach your injectors, leading to premature fuel system wear and costly repairs ($5,000-$15,000+ for injector replacement on ISX engines).

Shipping Policy

Please carefully review our Shipping Policy when purchasing our products, as it applies to any order you place with us.

WHAT ARE MY SHIPPING & DELIVERY OPTIONS?

Logistics: UPS, USPS, DHL.

We offer free shipping across the USA.

All delivery times and dates provided are estimates and given in good faith.

For EU and UK consumers: This does not affect your statutory rights. Unless specifically noted, estimated delivery times reflect the earliest available delivery, and items will be delivered within 30 days after we accept your order. For more information, please refer to our Terms.

ORDER PROCESSING TIME

Processing Time: 1-2 Days
Shipping Time: 3-7 Days

DO YOU DELIVER INTERNATIONALLY?

Yes, we ship worldwide.

Note:
International deliveries may be subject to various rules and restrictions, and you may incur additional taxes and duties beyond our control. You are responsible for complying with the laws of your country and for any associated costs.

WHAT HAPPENS IF MY ORDER IS DELAYED?

If your delivery is delayed, we will inform you as soon as possible and provide a revised estimated delivery date.

For EU and UK consumers: This does not affect your statutory rights. For more information, please refer to our Terms.

QUESTIONS ABOUT RETURNS?

If you have questions about returns, please review our Return Policy.

COVID-19 STATEMENT & SHIPPING DELAYS

Please be aware that there may be shipping delays due to ongoing COVID-19 impacts. Limited transportation availability may extend delivery times. Our team is doing our best to provide accurate timelines, but the global supply chain is unpredictable, and delays may occur. We appreciate your patience and understanding during this time and are happy to assist with any questions or concerns regarding your orders.

HOW CAN YOU CONTACT US ABOUT THIS POLICY?

If you have any further questions or comments, please contact us at our Support Center.

Thank you for choosing PEAK PERFORMANCE Filters. We hope you are satisfied with your order. However, if you are not completely happy due to any damaged or missing parts, you may return the item for a refund or replacement. Please see below for more information on our return policy.

RETURNS

To be eligible for a refund, you must return the product within 14 calendar days of your purchase. The item must be in the same condition you received it and undamaged. All orders are final; we do not accept returns or exchanges unless the items received are damaged or missing.

We are not liable for any consequences arising from customers purchasing products from us and subsequently selling them on third-party platforms (Amazon, eBay, Walmart, etc.). Any actions taken by these platforms, including listing deactivation or account suspension, are beyond our control. Customers engaging in such activities do so at their own risk and should adhere to the policies and guidelines of those platforms.

RETURN PROCESS

To return an item, please contact customer service to request a refund or replacement with proof of damage or missing parts (such as videos or pictures). Once your claim is verified, contact support to obtain a return address. Securely package the item in its original packaging and include your proof of purchase (Order Invoice). When a return is authorized, PEAK PERFORMANCE Filters will proceed with the refund or replacement.

In some cases, your return shipment may be free of charge. If you return an item for a reason not related to our error, the parcel will be sent back to your original address, and no refund will be initiated.

REFUNDS

After we receive your return and inspect the item, we will process your refund or exchange. Please allow at least 14 days from the receipt of your item for processing. Refunds may take 1-2 billing cycles to appear on your credit card statement, depending on your card issuer. We will notify you via email when your return has been processed.

EXCEPTIONS

The following items cannot be returned or exchanged:

Perishable items
Intimates
Gift cards
Custom items
Digital products

For defective or damaged products, please contact us using the details below to arrange a refund or exchange.

QUESTIONS

If you have any questions regarding our return policy, please contact us at our Support Center.

peakperformancefilters@gmail.com

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ORDER PROCESSING TIME

DO YOU DELIVER INTERNATIONALLY?

WHAT HAPPENS IF MY ORDER IS DELAYED?

QUESTIONS ABOUT RETURNS?

COVID-19 STATEMENT & SHIPPING DELAYS

HOW CAN YOU CONTACT US ABOUT THIS POLICY?

RETURNS

RETURN PROCESS

REFUNDS

EXCEPTIONS

QUESTIONS

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Fleetguard FF5776 Fuel Filter 6-Pack OEM Cummins ISX ISX15 QSX 2893612

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WHAT ARE MY SHIPPING & DELIVERY OPTIONS?

ORDER PROCESSING TIME

DO YOU DELIVER INTERNATIONALLY?

WHAT HAPPENS IF MY ORDER IS DELAYED?

QUESTIONS ABOUT RETURNS?

COVID-19 STATEMENT & SHIPPING DELAYS

HOW CAN YOU CONTACT US ABOUT THIS POLICY?

RETURNS

RETURN PROCESS

REFUNDS

EXCEPTIONS

QUESTIONS

// Recently viewed products

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