BD Diesel Crank Case Vent Filter Kit - 1999-2003 Ford 7.3L
If your 1999-2003 Ford F-250, F-350 or larger Super Duty with the 7.3L Power Stroke has oil weeping from the intercooler boots, a film of oil inside the intake tubes, or boots that have gone soft and puffy, the crankcase vent is the usual source. The BD Diesel 1032170 Crank Case Vent Filter Kit puts a real filter in that vent path so the oil mist stays out of your turbo, intercooler and silicone couplers.
Every diesel pushes some combustion gas past the rings. That blow-by pressurizes the crankcase and picks up a fine mist of engine oil on its way out the breather. On the 7.3L that vapor ends up in the intake tract, where the oil coats the compressor wheel, collects in the intercooler and sits on the inside of the boots. BD's description of this kit says the residue reduces turbocharger and intercooler efficiency and breaks down silicone boots until they balloon and blow off. The 1032170 kit runs the vent gases through a dedicated filter element first, so the oil is trapped before it reaches the intake. A high-mileage 7.3L makes more blow-by than a fresh one, which is why this problem gets worse as the truck ages.
Pull the intake tube at the turbo inlet and look inside. A light haze is normal on any diesel; wet oil you can wipe up with a rag is not. Check the boots at the intercooler for softness or bulging. If you find heavy oil, measure crankcase blow-by too: a CCV filter traps vapor, but it does not cure a worn engine that is pushing excessive blow-by. If your truck also tows heavy, read our 4R100 towing upgrade guide while you have the front of the truck apart, since the 4R100 behind most of these engines is the next weak link under load.
This kit is listed for the 1999-2003 Ford 7.3L Power Stroke, which covers the 1999.5-2003 F-250 and F-350 Super Duty pickups and the F-450 and F-550 chassis cabs with that engine. It is not for the 1994-1997 OBS 7.3L or the 6.0L that replaced it in 2003.5. BD notes this product is not for sale on licensed California vehicles; it is sold for use under federal EPA rules. If you are unsure which engine or build date you have, send us the year and VIN before ordering. Most of these trucks use the 4R100 automatic; you can find matching transmission parts on our 4R100 parts page.
Pair it with other 7.3L service work while you are under the hood. Many owners do this kit alongside a Banks Ram-Air intake for the 99-03 7.3L, and towing trucks benefit from a 37-row transmission cooler kit to keep the 4R100 cool. A clean intake and cool transmission fluid are two of the cheapest ways to keep an old Power Stroke healthy.
| Brand | BD Diesel |
| Part number | 1032170 |
| Fits | BD Diesel Crank Case Vent Filter Kit - 1999-2003 Ford 7.3L |
| Type | Air Filters - Universal Fit |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
It fits the 7.3L Power Stroke trucks built from 1999 through 2003. The 2003.5 and later trucks have the 6.0L engine and need a different part. Send us your VIN if you are not sure which engine you have.
The replacement element for this kit is BD part 1302171. Check it at each oil change and replace it when it is saturated with oil.
It stops oil mist from reaching the boots, which is what softens them. Boots that are already swollen should be replaced at the same time, and the intake tubes and intercooler should be cleaned out.
BD states this kit is not for sale on licensed California vehicles. It is sold for use under federal EPA jurisdiction.
Expect about 1.5 to 2 hours with basic hand tools. The kit includes the hardware and clamps.
