Fuel Filter FF033 — Fuel Filter for PACCAR MX-11 (K37-1029 / FS20172) 155

Steinberg

Fuel Water Separator FF033 for PACCAR MX-11 / MX-13 (2015-2017): K37-1029

Name: Fuel Water Separator FF033 for PACCAR MX-11 / MX-13 (2015-2017): K37-1029
Brand: Steinberg
SKU: FF033
Price: 26.99 USD
Availability: InStock

SKU: FF033OEM: K37-1029Cross: K37-1029, FS20172, PF46081

Confirmed Vehicle Compatibility

Kenworth T680 (PACCAR MX-13, 2015-2017)Kenworth T880 (PACCAR MX-13, 2015-2017)

Peterbilt 579 (PACCAR MX-11, 2015-2017)

$26.99

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OEM-grade certified

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Thread Size

M20 x 1.5

Outer Diameter

94mm

Height

248mm

Filter Media

Synthetic

OEM Reference

K37-1029

Cross Reference

K37-1029, FS20172, PF46081

Kenworth T680 (PACCAR MX-13, 2015-2017)Kenworth T880 (PACCAR MX-13, 2015-2017)Peterbilt 579 (PACCAR MX-11, 2015-2017)

Not sure about your truck? Contact us with your make, model and year — we'll confirm compatibility within 1 business day.

Prepare & Safety First

Park on level ground, engage parking brake. Allow engine to cool for at least 30 minutes. Have drain pan and proper tools ready.

Remove Old Filter

Use a filter wrench to loosen and remove the existing filter. Let residual fluid drain completely into your pan.

Prep New Filter

Apply a thin coat of clean oil or fuel to the new filter's gasket seal. This ensures a proper, leak-free seal.

Install & Torque

Thread the new filter on by hand until gasket contacts, then tighten 3/4 to 1 full turn. Do NOT over-torque.

Start & Verify

Start the engine and let it idle for 2–3 minutes. Check for leaks. Check fluid level and top off if needed.

Download Full Installation PDF →

About This Filter

The Steinberg FF033 is a fuel water separator element engineered for PACCAR MX-11 and MX-13 engines (2015–2017) in Kenworth and Peterbilt trucks. It removes water and particulate contamination from diesel fuel before it reaches the high-pressure injection system.

Carries PACCAR OEM part number K37-1029. Replace at each PM service interval.

Compatible Part Numbers

Fuel Water Separator FF033 for PACCAR MX-11 / MX-13 (2015-2017): K37-1029 (SKU: FF033) is a direct replacement for the following OEM and aftermarket part numbers:

K37-1029FS20172PF46081

OEM Reference Number

The OEM reference number for this filter is K37-1029. Use this number to verify fitment with your truck manufacturer's parts catalog.