Cummins ISF 2.8L Oil Filter Cross-Reference: LF17356 vs 5266016 — What Actually Fits & When to Change

If you're running a Cummins ISF 2.8L — Foton Tunland, JAC truck, or industrial QSF 2.8L — you've probably stood at a parts counter wondering which filter actually fits. The counter guy hands you 5266016. Online search says LF17356. Some forum guy swears by Baldwin B40051. You're holding a dirty filter and your truck's on the lift.

Here's the deal. I've worked on ISF 2.8L engines across Chinese pickups, light trucks, and stationary equipment for years. Let's sort out what crosses, what doesn't, and what keeps your engine running past 300,000 km.

Cross-Reference: What Interchanges

All four of these spin onto the same 3/4-16 UNF threads. All filter to 30 microns with a 12 psi bypass valve. If you're in a pinch, any of them work.

Part Number	Manufacturer	Micron	Bypass	Notes
LF17356	Fleetguard (Cummins)	30	12 psi	Factory spec, same as 5266016
5266016	Cummins OE	30	12 psi	Identical — same line as LF17356
B40051	Baldwin	30	12 psi	MicroLite media, extended drains
CP40001	CAT / Adv. Filtration	30	12 psi	Yellow-iron / stationary apps

LF17356 and 5266016 are literally the same filter. Cummins owns Fleetguard — same production line, different box. Baldwin B40051 uses their MicroLite glass media; some fleet guys prefer it for intervals past 7,500 miles. CP40001 is the CAT-branded version for industrial equipment. Don't grab a generic 3/4-16 filter off the shelf — wrong bypass spring pressure and you're sending unfiltered oil through your bearings on cold starts. That's a $4,000 mistake on a $29 filter.

When to Change It

• Highway / light duty: every 7,500 miles (12,000 km)
• Mixed duty / occasional towing: every 5,000 miles (8,000 km)
• Heavy / off-road / constant load: 250 hours or 5,000 km — whichever hits first
• Industrial QSF 2.8L (stationary): every 250 hours, no exceptions

Running biodiesel or high-sulfur diesel? Cut those intervals 25%. Soot loading clogs 30-micron media faster than you'd think.

How to Change It — LF17356 Spin-On

Ten minutes. Here's the procedure:

1. Warm the engine 5 minutes. Warm oil drains faster, carries more junk out.
2. Drain pan under the filter. ISF 2.8L filter sits passenger side, angled down. Half a quart comes out when you spin it off.
3. Strap wrench, counterclockwise. 74mm / 14-flute cup wrench fits most LF17356 cans. Won't budge? Thank the last guy who over-tightened it.
4. Clean the mounting face. Check the old gasket came off. Double-gasketing is the #1 cause of post-change leaks.
5. Pre-fill the new filter. 300-400 ml of fresh oil into the center tube. Let it soak 30 seconds. This kills the dry-start lag.
6. Oil the new gasket with your finger. Prevents binding during tightening.
7. Hand-tight, then 3/4 turn. Torque spec is 15-18 ft-lbs. If you need a wrench to install it, you're already wrong.
8. Refill: 15W-40 diesel oil, ~8 quarts (7.6L). CI-4 or CJ-4 spec. Not passenger car oil — the additive package can't handle diesel soot. Browse our full oil filter collection for compatible filters.
9. Start and check. Oil pressure should build within 5 seconds. Light still on after 10? Shut it down.

What Vehicles Run This Filter

• Foton Tunland 4×4 (2012–2024) — popular in Australia, South Africa, South America
• JAC light trucks — delivery, cab-chassis, light commercial
• Ford F-150/F-250/F-350 — select export-market ISF 2.8L variants only
• Cummins QSF 2.8L industrial — generators, compressors, pumps, construction
• Dongfeng & Foton light trucks — Asia and Africa markets

Check the engine data plate. If it says ISF 2.8 or QSF 2.8, the thread pitch (3/4-16 UNF) and gasket (72mm OD) match.

Common Mistakes

1. Over-tightening

Hand-tight plus 3/4 turn. That's all. Crank it with a wrench and two things happen: the gasket deforms and leaks, or you can't remove it later without destroying the can.

2. Wrong oil

15W-40 diesel, CI-4 or CJ-4. Not 5W-20, not whatever's on sale. Diesel shears oil differently. Turbo bearings spin at 100,000+ RPM — they notice cheap oil immediately.

3. Not pre-filling

Spin it on dry and the pump has to fill 400ml of empty canister before oil reaches the bearings. That's 2-3 seconds of metal-on-metal every change. Over 200,000 km, that adds up.

Pro Tips

1. Keep a spare in the truck. $29.99 versus a spun bearing. You'll only need it at 11 PM on a Sunday, 200 km from anywhere.
2. Mark the date and hours on the filter with a paint pen. Four months and 4,000 km later, the answer's right on the can.
3. Cut the old one open. $15 filter cutter. Metal flakes or collapsed pleats tell you things a dipstick never will. Glitter in the media means rod bearing wear — long before you hear a knock.
4. Pair it with a fresh fuel filter. The ISF 2.8L's Bosch CP3 pump hates water and debris. Check out the FF63041NN fuel filter guide for Cummins engines.

FAQ

Are LF17356 and 5266016 the same filter?

Yes. Same can, same media, same specs. Fleetguard is Cummins' filtration division. Buy whichever's cheaper.

Can I use a Baldwin B40051?

Direct cross. Baldwin's MicroLite media may hold more dirt over extended intervals. For normal changes, the LF17356 at $29.99 does the job.

What oil for ISF 2.8L?

15W-40 diesel, CI-4 or CJ-4. Below -15°C, drop to 10W-30 diesel. Never use gasoline-engine oil. Shop our oil filter collection for the right match.

How do I know the filter is clogged?

You probably won't. The bypass valve opens at 12 psi and lets unfiltered oil through rather than starving the engine. No warning light. Change it on schedule, not when it "looks dirty."

Does this fit my Ford F-150 diesel?

Only if yours has the Cummins ISF 2.8L — which was export/specialty market, not standard North American F-150. The 3.0L Power Stroke uses a different filter. Check your engine plate.

Get the LF17356: LF17356 Oil Filter for Cummins ISF 2.8L — $29.99
All diesel filters: Oil Filters Collection
Fuel filter guide: FF63041NN Fuel Filter Replacement — Cummins B6.7 Cross-Reference & Install
More diesel guides: iFJF Diesel Maintenance Blog

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