Duramax 6.6L Fuel Filter Water Separator TP3018 (2001-2016)
Spin-on fuel filter and water separator for the 2001-2016 6.6L Duramax diesel. Dual-stage media pairs a 15-micron outer layer with a 5-micron inner layer at 98% water separation, and it threads onto the filter head already on the engine.
| Tier Pricing (USD / unit) | |
|---|---|
| Qty | Unit Price |
| 1+ units | $23.99 |
| 10+ units🎯 Recommended | $22.79 |
| 50+ units | $20.39 |
| 100+ units | $19.19 |
📋 Key Specs
| Type | Spin-on fuel filter / water separator |
| Filtration | Dual-stage - 15 micron outer / 5 micron inner |
| Water separation | 98% |
| Thread | M36 x 1.5 |
| Replaces | TP3018 / TP3012 / 12633243 / 12664429 / 19305685 / 19431541 |
| Application | 2001-2016 6.6L Duramax (LB7 LLY LBZ LMM LML) |
| Package | 1 x fuel filter |
❓ FAQ
Both are the same part. TP3018 is the number this filter is sold under and TP3012 is the earlier number for the same position, so a truck that calls for TP3012 takes this filter as well. The same filter also covers 12633243, 12664429, 19305685 and 19431541. Match the number on the filter you remove before ordering.
It covers the 2001-2016 6.6L Duramax diesel in its LB7, LLY, LBZ, LMM and LML forms. Trucks include Silverado and Sierra 2500HD and 3500HD over 2001-2016 and the 2007 Classic, and the vans are Express and Savana 2500, 3500 and 4500 from 2012-2016. The 2006 H1 Alpha takes the same filter. Check the full model number and the year on the door sticker before ordering.
One fuel filter. The filter head with the hand primer is a separate part number and is not part of this order.
Yes, it threads onto the head by hand. Disconnect the batteries and work with the engine cool. Set a drain pan and open the bleeder on the head. Wipe the seating face clean and lubricate and seat the seal on the neck before the filter goes on. Pump the hand primer with the bleeder open until fuel runs without air bubbles, then tighten the bleeder, start the engine and check for weeps. Diesel fuel is a fire risk, so follow local code.
A hard start, a loss of power, a rough idle, a water in fuel warning, or fuel pressure that falls away after long use all point at fuel filtration. If the filter is wet at the seal or at the head, that is a sealing problem rather than a media problem, so check the seal seat and the head before changing the filter again. The vehicle maker lists the interval, and the truck will also ask for the filter when it is due.
This is the fuel filter, not the filter head assembly with the hand primer and not the engine oil filter. It is for the 6.6L Duramax diesel over 2001-2016. It is not for 2017 and newer 6.6L diesels, not for the 3.0L diesel and not for gasoline engines. Open the description for the full list of numbers this filter replaces and match them against your old filter before ordering.
On 2006-2010 Duramax there is no in-tank electric pump, so cycling the key does not bleed the system. Open the bleeder on the head and pump the hand primer until fuel runs without air bubbles.
A weep at the seal is a sealing problem, not a media problem. Wipe the seating face clean and lubricate and seat the neck seal before fitting the new filter.
Hand-thread the filter until it touches the seating face before applying force. On a spin-on filter the thread almost always starts once the filter is square to the head.
Description
TP3018 Fuel Filter Water Separator for the 6.6L Duramax
The TP3018 is a spin-on diesel fuel filter and water separator built for the 6.6L Duramax engine. It threads onto the filter head already fitted to the engine, so the head and the hand primer stay in place and only the filter is changed at service time. The media runs two stages in one can, a 15-micron outer layer and a 5-micron inner layer, with water separation rated at 98%.
Key Takeaways
- Dual-stage media — a 15-micron outer layer and a 5-micron inner layer in one filter, rated at 98% water separation.
- Spin-on fit — threads onto the filter head already on the engine; the head and hand primer are not part of this filter.
- Direct number match — replaces TP3018, TP3012, 12633243, 12664429, 19305685 and 19431541.
- Full Duramax coverage — fits the 2001-2016 6.6L Duramax across the LB7, LLY, LBZ, LMM and LML engines.
- One filter in the box — the filter head and the seal are separate items.
Features & Benefits
- 15-micron outer layer — Takes the bulk of dirt, rust and paint flakes out of the fuel before the fine stage sees them.
- 5-micron inner layer — Catches the finer particles that get past the first stage.
- 98% water separation — Water separation is rated at 98% for this element.
- Spin-on body — Nothing to unbolt: the filter comes off and goes back on by hand on the existing head.
- M36 x 1.5 thread — Matches the thread on the 6.6L Duramax filter head, so the new filter seats on the same face as the one it replaces.
- Built for service intervals — Designed to be changed on the interval the vehicle maker lists, without disturbing the head or the primer.
Compatibility & Cross-Reference
Replaces Part Numbers
- TP3018
- TP3012
- 12633243
- 12664429
- 19305685
- 19431541
Common Applications
- Silverado 2500HD / 3500HD — 2001-2016, including the 2007 Classic
- Sierra 2500HD / 3500HD — 2001-2016, including the 2007 Classic
- Silverado 3500 — 2001-2006
- Express 2500 / 3500 / 4500, Savana 2500 / 3500 / 4500 — 2012-2016
- H1 Alpha — 2006
Engines covered: 6.6L Duramax LB7, LLY, LBZ, LMM and LML. This filter is an aftermarket replacement for the numbers listed above, not a factory boxed part.
Specifications
- Type — Spin-on fuel filter / water separator
- Filtration — Dual-stage, 15 micron outer / 5 micron inner
- Water separation — 98%
- Thread — M36 x 1.5
- Replaces — TP3018 / TP3012 / 12633243 / 12664429 / 19305685 / 19431541
- Application — 2001-2016 6.6L Duramax (LB7 LLY LBZ LMM LML)
- Package — 1 x fuel filter
Why This Filter
This is a direct replacement for the filter head already on the engine, supplied factory-direct. Specifications are published as they are: a stated dual-stage micron rating and a stated water separation figure for this part, with no claims attached that cannot be checked against the filter in your hand.
Package Includes
- 1 x TP3018 fuel filter
The filter head with the hand primer, and the seal, are separate items.
📄 Downloads
- FJ-TP3018-datasheet-en.pdf · 2 KB
