Bypass Parts

See how AMSOIL products perform in the lab and in the field.

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

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Part No. BK393

Filter Mount Assembly
System Kit: BMK22

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Part No. BK303

Filter Mount Assembly
System Kit: BMK21

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Part No. BK305

Filter Mount Assembly
System Kit: BMK30

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Part No. BP194

Bracket, Filter Mount Assembly, TopMounting Bracket, Filter Mount Assembly, Top

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Part No. BP195

Bracket, Filter Mount Assembly, BottomMount bracket, filter assembly, bottom

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Easy 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 to find the AMSOIL full-flow filter that fits your engine. Note the filter part number will correspond to the Adapter Block to match the same size and thread on the full-flow filter housing mount 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 23 M18 X 1.5 BK297 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 64 13/16 – 16 BK296 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 29 M18 X 1.5 BK297 Price Check Price Check
Ea15K 32 13/16 – 16 BK296 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

Best Purchase Options for Our Customers

Preferred CustomerIf you are not already an AMSOIL Customer, then you may consider using our Preferred Customer option for saving up to 25% off prices you find online.

Commercial AccountFor 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

Part No. BK13

Oil sampling petcock Kit assembly

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Part No. BK30

Oil sampling petcock valve for BMK30 kit

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Part No. BP47

Oil sampling petcock valve assembly

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Part No. BP67

Oil sampling petcock valve with 1/8″ NPT Street Tee Fitting

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Part No. BP89

Oil Return FittingOil return fitting for assembly, filling-Cap return fitting

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Part No. BP145

Oil sampling petcock valve, push button sampling, 1/4″ NPT

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Oil Pressure Lines and Hose Fittings

Part No. BP250

Hose, 13/32″ I.D., Sold by the Foot

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Part No. BP260

Fitting, 13/32″ Hose, 3/4″-16 JIC

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Part No. BP251

Hose, 1/4″ I.D., Sold by the Foot

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Part No. BP261

Fitting, 1/4″ Hose, 7/16″-20 JIC

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Part No. BP350

Hose, 1/2″ I.D., Special-Order, Sold by the Foot.

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Part No. BP360

Fitting, 1/2″ Hose, 7/8″-14 JIC

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New "O" Rings and Gaskets

Part No. BP41

Washer, Sealing, Hollow BoltGasket washer, sealing, hollow bolt

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Part No. BP196

2-1/2" GasketGasket, 2.80″ O.D., 2.50″ I.D., 0.20″ Thk.

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Part No. BP197

Gasket, 3.91" O.D., 3.57" I.D., 0.351" Thk.Gasket, 3.91″ O.D., 3.57″ I.D., 0.351″ Thk.

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Part No. BP220

Gasket, 3.45" O.D., 3.11" I.D., 0.261" Thk.Gasket, 3.45″ O.D., 3.11″ I.D., 0.261″ Thk.

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Part No. BP346

O-ring, 1 3/16" I.D. x 0.10 Thk.O-ring, 1 3/16″ I.D. x 0.10 Thk.

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Part No. BP347

O-ring, 1 7/8" I.D. x 0.10 Thk.O-ring, 1 7/8″ I.D. x 0.10 Thk.

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Part No. BP609

O-Ring for BK1202O-Ring for assembly BK1202- oil fill cap, aluminum, Duramax®

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Part No. BP1101

O-Ring for BK1201O-Ring for assembly BK1201- filter adapter, aluminum, Duramax®

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Part No. BP1102

O-Ring for BK1101O-Ring for assembly BK1101- oil filter cap, aluminum, 6.0/6.4L Powerstroke®

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Part No. BP1201

O-Ring for BK1102O-Ring for assembly BK1102- oil fill cap, aluminum, 6.0/6.4L Powerstroke®

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Fittings and Bushings

Part No. BK21

Elbow, 90-degree, 7/8"-14 JIC to 7/8"-14 JICElbow, 90-degree, 7/8″-14 JIC to 7/8″-14 JIC

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Part No. BK22

Fitting, 45-degree, 7/8"-14 JIC to 7/8"-14 JICFitting, 45-degree, 7/8″-14 JIC to 7/8″-14 JIC

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Part No. BP33

Fitting, Street Tee, 1/8" NPTFitting, Street Tee, 1/8″ NPT

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Part No. BP34

Fitting, Tee, 1/4" NPTFitting, Tee, 1/4″ NPT

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Part No. BP38

Bushing, Reducer, 1/8" to 1/4" NPTBushing, Reducer, 1/8″ to 1/4″ NPT

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Part No. BP39

Pipe Nipple, 1/4" NPT x 2'Nipple 1/4″ X 2″ (OP LOCATN)
Pipe Nipple, 1/4″ NPT x 2″

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Part No. BP40

Fitting, Self-Tapping Hollow BoltFitting, Self-Tapping Hollow Bolt

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Part No. BP44

Fitting, Oil-Sending Unit Adapter Kit, 1/8" NPT x 28BSP (Japanese cars)Fitting, Oil-Sending Unit Adapter Kit, 1/8″ NPT x 28BSP (Japanese cars)

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BP45

Fitting, Oil-Sending Unit Adapter Kit, 10mm x 1.0 (European cars)Fitting, Oil-Sending Unit Adapter Kit, 10mm x 1.0 (European cars)

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Part No. BP52

Fitting, Street Elbow, 1/8" NPTFitting, Street Elbow, 1/8″ NPT

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Part No. BP190

Fitting, 3/8" NPT to 3/4"-16 JICAdapter 3/8″ MNPT to 3/4″-16 JIC
Fitting, 3/8″ NPT to 3/4″-16 JIC

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Part No. BP191

Plug, Sealing, 3/4"-163/4″ -16 Allen Head Plug + O Ring
Plug, Sealing, 3/4″-16

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Part No. BP208

Fitting, 1/8" NPT to 7/16"-20 JICAdapter 1/8″ MNPT 7/16 JIC
Fitting, 1/8″ NPT to 7/16″-20 JIC

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Part No. BP209

Fitting, Adapter, 3/4"-16 to 1/4" NPTAdapter Fitting
Fitting, Adapter, 3/4″-16 to 1/4″ NPT

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Part No. BP242

Fitting, 90 Degree, 1/8" NPT to 7/16"-20 JICFitting, 90 Degree, 1/8″ NPT to 7/16″-20 JIC

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Part No. BP289

Fitting, Adapter, 7/8"-14 x 5/8" JICFitting, Adapter, 7/8″-14 x 5/8″ JIC

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Part No. BP313

Fitting, Adapter, 7/8"-14 to 7/16"-20 JICFitting, Adapter, 7/8″-14 to 7/16″-20 JIC

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Part No. BP331

Fitting, 90 degree, 7/8"-14 to 5/8" JICFitting, 90 degree, 7/8″-14 to 5/8″ JIC

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Part No. BP614

Fitting, 45 Degree, 1/8" NPTFitting, 45 Degree, 1/8″ NPT

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