# FOCUSFILTER 2277129 Fuel-Water Separator Filter, 6-Pack

FOCUSFILTER 2277129 is a replacement cartridge-style fuel-water separator filter sold in a six-pack. The listing identifies heavy-duty applications and names Paccar MX11 and MX13 engines among its fitment claims, so confirm the exact part number and vehicle fit before ordering.

- [Original product page](https://best-deals.pro/product/focusfilter-2277129-fuel-water-separator-filter-6-pack)
- [View offer](https://best-deals.pro/visit/focusfilter-2277129-fuel-water-separator-filter-6-pack)
- Market: US
- Language: en-US
- Currency: USD
- Brand: FOCUSFILTER
- Category: Cars & Motorcycles > Auto Parts & Maintenance > Mechanical Parts
- Price: 127.99 USD
- Previous price: 159.99 USD
- Discount: 20%
- Price checked: 2026-11-14T05:47:01.188Z
- Rating: 5 / 5
- Reviews: 1

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Listed as a replacement part, not an original part.
- The listing claims compatibility with Paccar MX11 and MX13 engine applications and identifies several Peterbilt truck fitments.
- The title specifies a six-pack. The details list one filter-water separator and one O-ring as included components.

## Pros

- Six filters per titled pack can suit buyers stocking replacement elements for recurring maintenance.
- The listing supplies a diameter and cartridge style to compare against the vehicle's specified replacement part.

## Specifications

### Identity
- Brand: FOCUSFILTER
- Product grade: Replacement Part
- Manufacturer part number: LEFL36
- OEM equivalent part number: 2277129
### Design and fit
- Vehicle service type: Heavy Duty
- Automotive fit type: Vehicle Specific Fit
- Style: Cartridge
- Item diameter: 3.94 inches
### Pack and support
- Number of items: 6
- Manufacturer warranty: 1 Year Manufacturer Warranty

## Before you buy

- Fitment claims name T660 with Paccar MX-13, T880 with Paccar MX11, and Peterbilt 365 and 389 with Paccar MX Series engines. Confirm the exact vehicle, engine and replacement number before purchase. The listing also gives multiple cross-reference numbers, so verify the one required for your application.

## In the box

- 1 fuel filter water separator (Check selected pack): The included-components details list one, while the title describes a six-pack. Check the selected listing for the quantity supplied.
- 1 O-ring (Included)

## A good fit for

- Heavy-duty vehicle owners or maintenance teams seeking a cartridge-style replacement associated with part number 2277129.
- Buyers who want a six-pack and have confirmed the filter's fitment for their vehicle.

## Less suited to

- Buyers seeking a confirmed original-equipment part, as the listing describes this as a FOCUSFILTER replacement.
- Buyers who have not verified fitment against their vehicle and engine.

## Customer feedback

The supplied rating evidence is a single five-star rating. That small sample does not establish a broader customer consensus or explain the rating. Buyers should give more weight to confirmed fitment and the listed replacement-part status for this vehicle-specific filter.

## Frequently asked questions

### Is this an original equipment filter?
No. The listing states that it is a FOCUSFILTER replacement part, not an original part.
### Which vehicles does the listing name?
It names T660 with a Paccar MX-13, T880 with a Paccar MX11, and Peterbilt 365 and 389 trucks with Paccar MX Series engines. Confirm the specific fit for your vehicle.
### What comes in the package?
The product details list one fuel filter water separator and one O-ring. The title describes a six-pack, so check the selected listing's package details to confirm the quantity of each component.

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## Add-ons

- [2234788 Oil Filter Replace 2047411 2151728 HU12009Z LF16368 P957929 \| Compatible with DAF XF/CF MX-13315/13355/13390 12.9L MX-13340/13375 12.9L 6cyl EURO6 Truck Diesel SPARE XF106 480PC\(3 PCS\)](https://best-deals.pro/visit/focusfilter-2277129-fuel-water-separator-filter-6-pack)

## Images

![FOCUSFILTER 2277129 Fuel-Water Separator Filter, 6-Pack — 1](https://best-deals.pro/i/1qfCm2PVGPGtwv4GW0X64Pe4UeG5HqmKYLAcXy_sFhJRII7EW3G7md5QZoE3diGxN0JjELRzEeLfGEDjJJ67c4AgWkSRaiO0fBniRoVo-We8G6qsj095MzaY.jpg)

![FOCUSFILTER 2277129 Fuel-Water Separator Filter, 6-Pack — 2](https://best-deals.pro/i/PS-wx3wJIm6M9ljICZ6WbCmFY_wgsz2bsg_3DTb9qAum47_1bXOOFRBFEx84fyZAVmBCOB3Z0Whku5yXhl9JdpYGIe1ReBfuz3NuLx3d377cIAsp37I4hNc3.jpg)

![FOCUSFILTER 2277129 Fuel-Water Separator Filter, 6-Pack — 3](https://best-deals.pro/i/k2UOmOwK9jbabZHBzIYq7F9oPoQX4bhQHqPHomdEMBaejMMLy1nNHQXsyAkgOV7eSEeHHtEvT1M0T7LJsTFvnlJ5orVcoqsnnL-NPLcV4HM8QeYZl105hVMo.jpg)

![FOCUSFILTER 2277129 Fuel-Water Separator Filter, 6-Pack — 4](https://best-deals.pro/i/Y3RgoatcVTFc6_DkeeMbCagM9WR2JfEvJCP9Hlfc_kp19X8GBfmaoih491fDjYoEPQwcGUprNsSq-zvhlF_V-WjBF2EYn2Bkh579G-Ep1tE8O17VV1IiQa-6.jpg)

![FOCUSFILTER 2277129 Fuel-Water Separator Filter, 6-Pack — 5](https://best-deals.pro/i/ecw3NgAWMQZlVIf-fUhLtriBm74nYALBLlbQTwUlgu6riG4fhKi2teKXoDzLHZhuU0dg-kqZaQTi-lWv00XkOYgHywOlPP0RZBFXPxkVbWWBjuwYIH3La-Az.jpg)

![FOCUSFILTER 2277129 Fuel-Water Separator Filter, 6-Pack — 6](https://best-deals.pro/i/w13Z1s0bevzAyjL-14MUSpTy_7NYAeMpk5BRenNJknb2Noh84RANV72oYUsZ87YW-L-nNy7zb62rA03dPGeVNfIYWGcYe1em7Oi9HXNRLigWv0kGdkrPPA3a.jpg)

![FOCUSFILTER 2277129 Fuel-Water Separator Filter, 6-Pack — 7](https://best-deals.pro/i/iq5wD2UbtR-PVuFWBTc8Upq73Z613K9Z1cEbUvnlUdPtpxqWJE0AdKr-7HdoaxAl2E91wA4iKZWxpQLtHXoUBMq43hkFY5dLwYe18Ycb-DJZJSQah6kQDeDh.jpg)