Description
Duramax 6.6L Fuel & Transmission Filter Combo — TP3018 + 29539579
Knock out two critical maintenance items in one order with the iFJF TP3018 Fuel Filter + 29539579 Transmission Filter Combo Pack. This bundle covers both your fuel and oil filtration needs for 2001-2016 GM Duramax 6.6L diesel engines (LB7, LLY, LBZ, LMM, LML) — Silverado 2500HD/3500HD and Sierra 2500HD/3500HD. Buy together and save vs. purchasing separately.
Most Duramax owners change their oil every 5,000-7,500 miles and their fuel filter every other transmission service (10,000-15,000 miles). This combo ensures you have both filters on hand when service time comes — no last-minute parts store runs.
What's Included
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TP3018 Fuel/Water Separator Filter: 4-micron absolute filtration with hydrophobic water separation media. Replaces ACDelco TP3018, TP3012, GM 12664429. Protects your Bosch CP3 injection pump and fuel injectors.
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29539579 Spin-On Transmission Filter: Synthetic blend media with silicone anti-drainback valve for immediate ATF circulation on cold starts. 25-micron absolute filtration. Replaces ACDelco PF2232, WIX 57202, Baldwin B1441.
Key Features
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OEM-Spec Filtration: Both filters meet or exceed original equipment specifications for fit, flow rate, and filtration efficiency
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Heavy-Duty Media: Multi-layer cellulose/synthetic blend handles extended drain intervals up to 7,500 miles (oil) and 15,000 miles (fuel)
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Anti-Drainback Valve: Silicone valve in the transmission filter prevents dry starts — oil pressure builds within 2 seconds of cranking
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Pre-Lubed Seals: Both filters include fresh Viton O-rings/gaskets — ready to spin on
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Rust-Resistant Coating: Heavy-gauge steel canisters with corrosion-resistant exterior finish
Vehicle Compatibility
| Year |
Make |
Model |
Engine |
| 2001-2016 |
Chevrolet |
Silverado 2500HD / 3500HD |
6.6L Duramax V8 (LB7, LLY, LBZ, LMM, LML) |
| 2001-2016 |
GMC |
Sierra 2500HD / 3500HD |
6.6L Duramax V8 (LB7, LLY, LBZ, LMM, LML) |
FAQ
Q: Is this combo pack cheaper than buying separately?
A: Yes — this bundle saves you money vs. purchasing the TP3018 fuel filter and 29539579 transmission filter individually.
Q: Can I use this on a 2006 LBZ?
A: Yes — both filters are correct for all 2001-2016 Duramax engines (LB7, LLY, LBZ, LMM, LML). The LBZ uses the same M36 x 1.5 fuel filter thread and the same transmission filter mount as later generations.
Q: Should I change both filters at the same time?
A: Not necessarily — the fuel filter interval (15,000 miles) is roughly double the transmission service interval (5,000-7,500 miles). Many owners buy this combo to have both filters on the shelf, then change the transmission filter at every transmission service and the fuel filter every other transmission service.
Q: What oil do you recommend for Duramax?
A: This transmission filter is compatible with all diesel oils — conventional 15W-40, synthetic 5W-40, and synthetic blends. For most Duramax engines, 15W-40 conventional (summer) or 5W-40 synthetic (winter) is recommended. The LML and L5P generations specifically call for 15W-40 CK-4 or FA-4 specification oil.
Q: Will this fit trucks with the 1R-0750 filter head conversion?
A: The transmission filter fits regardless. The TP3018 fuel filter fits the standard 12642623 filter housing. If you've converted to the 1R-0750 CAT filter head, you'll need a CAT 1R-0750 filter element instead. See our 12642623 + 1R-0750 conversion kit.
Q: Is this combo cheaper than buying filters separately?
A: Yes — bundling the TP3018 fuel filter and 29539579 transmission filter saves you money compared to purchasing them individually. If you prefer to buy single filters, we offer the TP3018 solo and 29539579 solo — but most Duramax owners find the combo more convenient since fuel and transmission filter changes often line up on the same service schedule.
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