Best Oil Filter for 6.7 Powerstroke: 7 Top Picks Ranked by Published Specs
The Motorcraft FL-2124-S is the oil filter to buy for a 6.7 Powerstroke, because Ford superseded the FL-2051-S that most buying guides still name. Seven filters fit this engine and sell on Amazon today. Only three publish an efficiency figure, and one of those was measured on a different filter entirely.
I set out to rank oil filters for the 6.7L Power Stroke and spent most of the time on a different problem: working out which filters actually fit this engine, and which ones only look like they do. Two of the most prominent listings in the search results are for other engines. One of the best-known brands publishes no filtration figure at all.
| # | Filter | Best For | The Number That Matters |
|---|---|---|---|
| 1 | Motorcraft FL-2124-S | Best Overall | Supersedes FL-2051-S |
| 2 | WIX 57151XP | Best for Synthetic Oil | 99% at 23 microns, on another part |
| 3 | Fleetguard LF17494 | Best for Cold Starts | ~50% less cold-start restriction |
| 4 | Mobil 1 M1-405A | Best for Extended Drains | 99% at 30 microns |
| 5 | K&N HP-4005 | Best for Easy Removal | 1-inch welded hex nut |
| 6 | Doc's Diesel D6128 | Best Published Efficiency Claim | 25 microns at 99% |
| 7 | ACDelco Gold PF67 | Best Non-Ford OEM Equivalent | Cross number 19254719 |
1. Motorcraft FL-2124-S: Best Overall
The Motorcraft FL-2124-S is the current Ford part for this engine, and the FL-2051-S that most articles still name has been superseded by it.
Motorcraft's part data lists the FL-2124-S as superseding four earlier numbers: FL-2051-S, FL-2051, BC3Z-6731-A and BC3Z-6731-B. Its stated application covers 2011 to 2026 F-250, F-350 and F-450 Super Duty, 2011 to 2025 F-550, 2021 to 2025 F-600, and F-650 and F-750 for 2016 to 2019 and 2021 to 2026. That is every 6.7 Power Stroke pickup Ford has built.
The supersession is recent enough that the aftermarket has not caught up. K&N's published cross-reference chart for this filter position, quoted in full under pick 7 below, still lists Ford FL2051 and FL2051S and carries no FL-2124-S entry at all. That is a good illustration of how long catalogue data takes to follow a part change.
| Motorcraft FL-2124-S | What the spec sheets say |
|---|---|
| Filtration efficiency | Not published |
| Filter media | Not published |
| Bypass and anti-drainback valves | Not published |
| Fits | 2011-2026 F-250/350/450, 2011-2025 F-550, 2021-2025 F-600, F-650/750 |
The catch: Ford publishes no micron rating, no efficiency percentage and no media description for the FL-2124-S. For the filter Ford designed for its own engine, that is a striking gap, and it means the top pick here cannot be compared numerically against the ones below it. Owners on Ford Powerstroke Diesel Forum threads report the FL-2124-S carries synthetic media where the FL-2051-S did not, and also disagree with each other about which one traps finer particles. Treat that as anecdote. No manufacturer document confirms it.
Skip it if: you want a published efficiency number to justify the purchase, because Ford does not give you one.
2. WIX 57151XP: Best for Synthetic Oil
The WIX 57151XP is the only filter here that tells you, in its own listing, that its headline efficiency figure belongs to a different part number.
The 57151XP listing states 99% efficiency at 23 microns and then adds the qualifier in the same sentence: "based on 51515XP". The 51515XP is a Chrysler-application filter from the same WIX XP line. So the figure describes the media family, not the filter in the box.
That disclosure is worth more than it first appears. Every brand does some version of this. WIX is the one that writes it down.
WIX XP media is a synthetic blend with natural fibres that removes the need for wire backing, and WIX rates the line for intervals up to 20,000 miles.
| WIX 57151XP | What the spec sheets say |
|---|---|
| Filtration efficiency | 99% at 23 microns, measured on the 51515XP |
| Filter media | Synthetic blend with natural fibres, no wire backing |
| Bypass and anti-drainback valves | Not published on the listing |
| Fits | F-Series Super Duty 6.7L diesel, 2011-2014 |
The catch: the fitment WIX states on this listing stops at 2014, while the Motorcraft part it replaces runs to 2026. WIX's own catalogue carries both a 57151 and a 57151XP for this position, so the narrow year range reads like listing data that was never updated rather than a real fitment limit. If you own a 2015 or later truck, confirm it before buying.
Skip it if: your truck is newer than 2014 and you want the listing itself to confirm the fit.
3. Fleetguard LF17494: Best for Cold Starts
The Fleetguard LF17494 is the pick if your truck sits outside in winter, because it is the only one here with a published cold-start restriction claim.
Cummins Filtration builds the LF17494 with StrataPore media, a multi-layer synthetic construction rather than the cellulose most spin-ons use. Distributor technical data for the LF17494 puts the reduction in cold-start restriction at close to 50% against a conventional element, with a maximum working pressure of 125 psi.
Cold-start restriction is the moment a filter matters most on a diesel. Thick oil, a dry top end, and a media that resists flow will push the bypass open and send unfiltered oil through the engine.
One more thing sets this listing apart. It is the only one of the seven whose Amazon title names the engine outright, as "Ford V8 406 6.7L FI Turbo Diesel", rather than listing truck models that also came with gas engines.
| Fleetguard LF17494 | What the spec sheets say |
|---|---|
| Filtration efficiency | Not published |
| Filter media | StrataPore multi-layer synthetic |
| Bypass and anti-drainback valves | Max working pressure 125 psi; valve settings not published |
| Fits | Ford V8 6.7L turbo diesel, 2011-2021 per distributor data |
The catch: Cummins publishes a restriction figure and a pressure rating but no efficiency percentage and no micron rating for the LF17494. The 25-micron number that circulates for StrataPore comes from forum posts, not from Cummins. The Amazon listing also carries a single rating, so there is no meaningful pattern of owner feedback behind it.
Skip it if: you want a filter with a track record you can read in the ratings.
4. Mobil 1 M1-405A: Best for Extended Drains
The Mobil 1 M1-405A publishes the clearest efficiency figure of any filter here, and contradicts itself on service interval three times on a single page.
Mobil's product page for the M1-405A states filtration efficiency of up to 99% at 30 microns, a synthetic fibre blend media, a nitrile gasket and an anti-drain back valve. That is more disclosure than Ford, Cummins, K&N or ACDelco offer for this application.
Then read the same page twice. The body copy promises protection "for up to one full year or 25,000 miles". The Advanced Performance specification block directly beneath it lists a mileage interval of 20,000 miles. The FAQ further down says 20,000 again. Three figures, one page, one filter.
The footnote is worth reading too. Mobil's 9x operating pressure claim is marked as ExxonMobil testing of the burst rating of the M1-113A, a different filter, under ISO 4548-6. Same pattern as the WIX disclosure above, in smaller type.
| Mobil 1 M1-405A | What the spec sheets say |
|---|---|
| Filtration efficiency | 99% at 30 microns |
| Filter media | Synthetic fibre blend |
| Bypass and anti-drainback valves | Anti-drain back valve fitted; bypass setting not published |
| Fits | Ford F-250 Super Duty and related, per Mobil application data |
The catch: 30 microns is the coarsest published threshold on this list, so the most transparent number here is also not the finest one. The M1-405A also carries the lowest star rating of the seven picks on Amazon.
Skip it if: you change oil on Ford's schedule anyway, because an interval rating beyond 20,000 miles buys you nothing on an engine Ford caps far below that.
5. K&N HP-4005: Best for Easy Removal
The K&N HP-4005 is the only filter here with a welded hex nut on the base, and the only one whose own manufacturer publishes no filtration figure whatsoever.
The one-inch welded nut means a standard socket removes the filter. On a 6.7 Power Stroke the filter sits in a tight housing under the intake, and a cap wrench that slips on a hot, oil-slick canister is a genuine annoyance. This solves it.
K&N's published specification table for the HP-4005 is unusually complete on mechanical detail and silent on filtration. It confirms an anti-drainback valve, a bypass valve, a relief setting of 18 to 22 psi, a 1-1/16 inch by 16 thread, 6.656 inches of height and a 3.719 inch outside diameter.
What the table does not contain is a micron rating or an efficiency percentage. The media is described only as "High Flow Premium Media".
| K&N HP-4005 | What the spec sheets say |
|---|---|
| Filtration efficiency | Not published |
| Filter media | "High Flow Premium Media", composition not published |
| Bypass and anti-drainback valves | Both fitted; bypass relief 18-22 psi |
| Fits | 2011-2026 F-250, F-350, F-450, F-550 and F-650 Super Duty |
The catch: the Amazon listing sells this filter as "20,000 Mile Engine Protection". K&N's own product page makes no such promise, describing the filter instead as designed to withstand the service intervals recommended by vehicle manufacturers, backed by a 1-year limited warranty. The 20,000-mile figure lives on the retail listing, not on the manufacturer's page.
Skip it if: you want a published efficiency figure, because K&N does not print one for this part.
6. Doc's Diesel D6128: Best Published Efficiency Claim
The Doc's Diesel D6128 claims the finest efficiency threshold on this list, and names neither the laboratory that measured it nor the standard it was measured against.
25 microns at 99% is a better number than the Mobil 1 figure of 99% at 30 microns, and finer than the 23-micron WIX claim once you account for the WIX figure belonging to another part. The listing labels it "third party tested".
That phrase is doing a lot of work. ISO 4548-12 is the multi-pass standard that produces comparable efficiency numbers for lube filters, and the D6128 listing does not reference it. A 99% figure measured under a different protocol is not comparable to one that was.
The listing does state its interchange clearly, covering Motorcraft FL2051 and FL2124S, WIX 57151, Baldwin B7379, Purolator L46128 and Premium Guard PG6128. That matches the interchange data K&N publishes independently.
| Doc's Diesel D6128 | What the spec sheets say |
|---|---|
| Filtration efficiency | 25 microns at 99%, test standard not named |
| Filter media | Synthetic, described only as high-flow |
| Bypass and anti-drainback valves | Not published |
| Fits | 2011-2025 F-250 to F-550, 2017-2026 F-650 and F-750 |
The catch: an unnamed lab and an unnamed standard mean the best-looking number on this page is the one you can verify least. Doc's Diesel is also a specialist reseller brand rather than a filter manufacturer with published engineering literature behind it.
Skip it if: you want the efficiency figure you are paying for to be traceable to a named test method.
7. ACDelco Gold PF67: Best Non-Ford OEM Equivalent
The ACDelco Gold PF67 is a General Motors service part that fits a Ford diesel, and nothing in its listing tells you so.
The cross-reference is not in doubt. K&N's published chart for this filter position lists AC Delco PF67 and Chevrolet 19254719 alongside Ford FL2051S, WIX 57151 and Baldwin B7379. The PF67 is a genuine OEM-grade filter for this application from a supplier with no connection to Ford.
It is a real option if Motorcraft stock is thin. It is also the pick most likely to make a parts counter argue with you.
| ACDelco Gold PF67 | What the spec sheets say |
|---|---|
| Filtration efficiency | Not published |
| Filter media | Not published |
| Bypass and anti-drainback valves | Not published |
| Fits | GM applications only on the listing; crosses to the 6.7L Power Stroke position |
The catch: ACDelco's listing describes the PF67 as manufactured to meet specifications for General Motors vehicles and never names a Ford application, so the fitment rests entirely on third-party cross-reference data. The Amazon listing also carries almost no ratings.
Skip it if: you want the box to confirm the fit rather than a cross-reference chart.
How We Ranked These
Nothing on this page was physically tested, cut open or run on a truck. Saying otherwise on a page carrying affiliate links would be a lie with legal consequences attached.
The ranking is built from three things. First, published manufacturer specifications, taken from each brand's own documentation rather than from retail listings, with the disagreements between the two recorded where they appeared. Second, cross-reference data confirmed against a second independent source, because single-sourced interchange charts in this category are frequently wrong. Third, what the listing itself states about fitment, because on this engine that is where most buyers go wrong.
Where a manufacturer publishes no figure, the table says "Not published" rather than borrowing a number from somewhere else. Four of these seven filters publish no efficiency figure at all, and pretending otherwise would have produced a tidier comparison and a false one.
The candidate pool came from Amazon search, Best Sellers and New Releases for this engine, read directly. Sponsored placements were discarded before ranking, since a paid slot is evidence of a marketing budget and nothing else.
What Actually Matters When You Choose One
The part number changed, and most guides have not noticed. The FL-2051-S is superseded by the FL-2124-S. Both are still on sale, and the older one is still what the majority of "best 6.7 Powerstroke oil filter" articles recommend.
Efficiency figures on this engine are mostly absent, not merely inconsistent. Ford, Cummins, K&N and ACDelco publish no micron rating for their filters in this position. Only Mobil 1, WIX and Doc's Diesel state one, and all three state it differently: 30 microns, 23 microns measured on another filter, and 25 microns under an unnamed standard.
Capacity and interval changed mid-generation. Third-party maintenance references put the 6.7 Power Stroke at roughly 13 quarts with filter for 2011 to 2022 and 15 quarts for 2023 and later, with the maximum interval rising from 10,000 to 15,000 miles. Your owner's manual for your model year is the figure that governs, and the oil life monitor overrides both.
A 25,000-mile filter rating is meaningless if Ford caps you at 10,000. Extended-interval marketing is written for passenger cars on 15,000-mile schedules. On a Super Duty the drain interval is set by the oil, the duty cycle and the monitor, not by the filter's warranty.
Filters That Did Not Make the List
Purolator PBL44872. This one appears high in Amazon results for "6.7 powerstroke oil filter" and it is the wrong engine. The PBL44872 is the filter for the 1994 to 2003 7.3L Power Stroke, crossing to Motorcraft FL-1995A. Its Amazon title reads "Compatible With Ford F-250 Super Duty, Ford F-350 Super Duty, Ford F-350, Ford F-250 and Ford F-250 HD" and names no engine anywhere. A buyer who searches by truck rather than by engine will order it.
Motorcraft FL2062A. Same brand, same FL-20 prefix, completely different application. The FL2062 and FL2062A serve the F-150 2.7L, Fusion, Explorer, Bronco and Lincoln petrol engines. Because it carries the same Motorcraft branding as the filter you actually want, it reads as correct at a glance in a search results grid.
Donaldson P502503. The cross-reference is legitimate and it appears in WIX interchange data for this position. The Amazon listing, sold as a six pack, states no application, no efficiency, no media and no dimensions. A filter recommended for a specific engine needs a listing that names that engine.
WIX Racing. A WIX-branded listing that names FL2051 and FL2051S in its interchange but never states its own part number, and sits in Amazon's "Everything Else" category rather than Automotive. There is no way to confirm which filter arrives.
Baldwin B7379 and FRAM PH10890. Both cross correctly to this filter position and both are confirmed in K&N's chart. Neither has a current Amazon listing, so neither gets a pick.
Unbranded FL2051S clones. A large share of the search results are keyword-title listings from sellers with no manufacturer, no website and no published specification. They are excluded on principle, not on price.
FAQ
What oil filter does a 6.7 Powerstroke take?
The current Ford part is the Motorcraft FL-2124-S, which supersedes the FL-2051-S, FL-2051, BC3Z-6731-A and BC3Z-6731-B. It covers 2011 to 2026 F-250, F-350 and F-450 Super Duty, 2011 to 2025 F-550, and F-650 and F-750 across most years.
Is the FL-2124-S the same as the FL-2051-S?
They are the same filter position and the FL-2124-S replaces the FL-2051-S, so it fits every truck the older filter fitted. Ford publishes no media or efficiency data for either, so any claim that one filters better than the other is currently unverifiable.
How many quarts of oil does a 6.7 Powerstroke hold?
Third-party maintenance references give roughly 13 quarts with a filter change for 2011 to 2022 engines, and 15 quarts for 2023 and later after Ford increased sump capacity. Confirm against the owner's manual for your model year before ordering oil.
What micron rating is the 6.7 Powerstroke oil filter?
Ford does not publish one. Among aftermarket options, Mobil 1 states 99% at 30 microns for the M1-405A, WIX states 99% at 23 microns for the 57151XP based on testing of a different part, and Doc's Diesel claims 25 microns at 99% without naming a standard.
Can I use a WIX 57620 on a 6.7 Powerstroke?
No. The WIX 57620 is the 6.7L Cummins filter and crosses to Mopar 05083285AA and Fleetguard LF16035. The WIX number for the 6.7 Power Stroke is 57151, or 57151XP in the synthetic line.
What to Do Next
Check what is currently on your truck before you order anything. If the canister reads FL-2051-S, you are not doing anything wrong, but the replacement Ford now supplies for that position is the FL-2124-S.
Then decide what you actually want from the filter. If it is a published efficiency figure, only three of these seven give you one, and each measured it differently. If it is the OEM part with the widest confirmed fitment, that decision is already made for you.
