Bypass filter maintenance made easy
Bypass oil system/ replacement parts
AMSOIL Bypass kit replacement parts for; hoses, fittings, “O” rings, filter head, adapter blocks and more can all be purchased separately for your maintenance needs. While some parts such as fittings and bushings, or oil supply lines can be found at your local parts supplier, it is nice to know you can find new replacement parts for every Bypass System Kit sold by AMSOIL.
Replacement parts for every kit include:
- Filter Mount Assembly
- Spin on Adapter Blocks fit engine full-flow housing mount
- Oil Sample Petcock Valves
- Oil Pressure Lines
- “O” Rings for Fittings and Adapter Blocks
- Fittings & Bushings
- Mounting Brackets
Every installation has the flexibility to install the filter mount assembly wherever it makes the most sense for easy access to replace the filter during routine maintenance.
Filter mount assembly
Part No. BK309
Filter Mount Assembly
System Kits: BMK23, BMK26, BMK27, BMK28
Part No. BK393
Part No. BK303
Part No. BK305
Mounting Bracket, Filter Mount Assembly, Top
Mount bracket, filter assembly, bottomEasy solution for oil supply and return oil lines
Spin-On adapters for bypass oil filter installation
AMSOIL’s patented Filter Housing Adapter Block part number. Install a clean and easy solution to access high pressure oil supply and low pressure clean oil return. Alternatively, ask your mechanic to locate the oil pressure ports directly from the engine. No engine modifications are needed to install the Adapter block on the full-flow filter housing.
Use the AMSOIL Lookup guide first to find the AMSOIL full-flow filter that fits your engine. Then see your filter part number that corresponds to the Adapter Block that matches the same size and thread on the full-flow filter housing that mounts on your engine.
| If your engine uses AMSOIL Full-Flow Filter |
Full-Flow filter housing thread |
Spin-On Adapter Block Part Number |
CANADA Price | United States Price |
| EaO 11 | M22 X 1.5 | BK299 | Price Check | Price Check |
| EaO 15 | 3/4 – 16 | BK295 | Price Check | Price Check |
| EaO 17 | M22 X 1.5 | BK299 | Price Check | Price Check |
| EaO 24 | 3/16 – 16 | BK302 | Price Check | Price Check |
| EaO 26 | 3/4 – 16 | BK295 | Price Check | Price Check |
| EaO 34 | 3/4 – 16 | BK295 | Price Check | Price Check |
| EaO 38 | 3/4 – 16 | BK295 | Price Check | Price Check |
| EaO 42 | 3/4 – 16 | BK295 | Price Check | Price Check |
| EaO 52 | 13/16 – 16 | BK302 | Price Check | Price Check |
| EaO 59 | 13/16 – 16 | BK302 | Price Check | Price Check |
| EaO 98 | 1 – 16 | BK300 | Price Check | Price Check |
| EaO 99 | 1 1/2 – 16 | BK301 | Price Check | Price Check |
| Ea15K 50 | M22 X 1.5 | BK299 | Price Check | Price Check |
| Ea15K 51 | 3/4 – 16 | BK295 | Price Check | Price Check |
| Ea15K 53 | 3/4 – 16 | BK295 | Price Check | Price Check |
| 2008 -to- present Chevrolet® |
M22 X 1.5 | BK310 | Price Check | Price Check |
| — | Ford/ Cummins | BK1104 | Price Check | Price Check |
Purchase options
If you are not already an AMSOIL Customer, you may consider using our Preferred Customer option to save up to 25% off prices you find online.
For Commercial businesses, AMSOIL can be your supplier for Bypass Filter replacement parts and filters elements along with our complete line of industrial strength synthetic lubricants and other maintenance supplies to keep your fleet in top running condition.
Oil petcock valves
Oil sampling petcock Kit assembly
Oil sampling petcock valve for BMK30 kit
Oil sampling petcock valve assemblyPart No. BP67
Oil sampling petcock valve with 1/8″ NPT Street Tee Fitting
Part No. BP89
Oil return fitting for assembly, filling-Cap return fitting
Part No. BP145
Oil sampling petcock valve, push button sampling, 1/4″ NPT
Oil pressure lines and hose fittings
"O" rings and gaskets
Gasket washer, sealing, hollow bolt
Gasket, 2.80″ O.D., 2.50″ I.D., 0.20″ Thk.
Gasket, 3.91″ O.D., 3.57″ I.D., 0.351″ Thk.
Gasket, 3.45″ O.D., 3.11″ I.D., 0.261″ Thk.
O-ring, 1 3/16″ I.D. x 0.10 Thk.
O-ring, 1 7/8″ I.D. x 0.10 Thk.Part No. BP609
O-Ring for assembly BK1202- oil fill cap, aluminum, Duramax®
Part No. BP1101
O-Ring for assembly BK1201- filter adapter, aluminum, Duramax®
Part No. BP1102
O-Ring for assembly BK1101- oil filter cap, aluminum, 6.0/6.4L Powerstroke®
Part No. BP1201
O-Ring for assembly BK1102- oil fill cap, aluminum, 6.0/6.4L Powerstroke®
Fittings and bushings
Elbow, 90-degree, 7/8″-14 JIC to 7/8″-14 JIC
Fitting, 45-degree, 7/8″-14 JIC to 7/8″-14 JIC
Fitting, Street Tee, 1/8″ NPT
Fitting, Tee, 1/4″ NPT
Bushing, Reducer, 1/8″ to 1/4″ NPTPart No. BP39
Nipple 1/4″ X 2″ (OP LOCATN)
Pipe Nipple, 1/4″ NPT x 2″
Fitting, Self-Tapping Hollow BoltPart No. BP44
Fitting, Oil-Sending Unit Adapter Kit, 1/8″ NPT x 28BSP (Japanese cars)
BP45
Fitting, Oil-Sending Unit Adapter Kit, 10mm x 1.0 (European cars)
Fitting, Street Elbow, 1/8″ NPTPart No. BP190
Adapter 3/8″ MNPT to 3/4″-16 JIC
Fitting, 3/8″ NPT to 3/4″-16 JIC
Part No. BP191
3/4″ -16 Allen Head Plug + O Ring
Plug, Sealing, 3/4″-16
Part No. BP208
Adapter 1/8″ MNPT 7/16 JIC
Fitting, 1/8″ NPT to 7/16″-20 JIC
Part No. BP209
Adapter Fitting
Fitting, Adapter, 3/4″-16 to 1/4″ NPT
Fitting, 90 Degree, 1/8″ NPT to 7/16″-20 JIC
Fitting, Adapter, 7/8″-14 x 5/8″ JIC
Fitting, Adapter, 7/8″-14 to 7/16″-20 JIC
Fitting, 90 degree, 7/8″-14 to 5/8″ JIC
Fitting, 45 Degree, 1/8″ NPT