Oil Seal 391086S - OEM Briggs and Stratton

Description:

This is a genuine OEM sourced replacement part designed for use with a variety of lawn and garden equipment. This item fits the cylinder and helps to provide an air tight seal to prevent any leaks. It is made out of rubber and it is sold individually. You will need a wrench set to complete this repair.

Frequently Purchased With

Oil Seal
$7.58

Cylinder Head ..
$8.03

Gasket-Crankca..
$9.21

Kit--Bushing/S..
$18.15

Kit-Bushing/Se..
$21.90

Compatibility

This part is compatible with the following machines:

Briggs and Stratton

19K400 Series (0110-0115) Engine
19E400 Series (0069-1168) Engine
19F400 Series (0043-1137) Engine
19G400 Series (0068-1196) Engine
19A400 Series Engine
19B400 Series Engine
19C400 Series Engine
231401 Series Engine

143300 Series Engine
141300 Series Engine
142300 Series Engine
140300 Series Engine
142700 Series Engine
1149-0 Portable Generator
8799-1 Portable Generator
9085-4 4,000 Watt Generator

Toro

38580 (5900001-5999999)(1995) Snowthrower
38580 (4900001-4999999)(1994) Snowthrower
38580 (3900001-3999999)(1993) Snowthrower
38580 (2000001-2999999)(1992) Snowthrower
38580 (1000001-1999999)(1991) Snowthrower
38580 (0000001-0999999)(1990) Snowthrower
38580 (9000001-9999999)(1989) Snowthrower
38580 (8000001-8999999)(1988) Snowthrower
38160 (7000001-7999999)(1987) Snowthrower
38160 (6000001-6999999)(1986) Snowthrower
38160 (5000001-5999999)(1985) Snowthrower
38160 (4000001-4999999)(1984) Snowthrower
38160 (3000001-3999999)(1983) Snowthrower
38160 (2000001-2999999)(1982) Snowthrower
38160 (0000001-0999999)(1980) Snowthrower
38160 (9000001-9999999)(1979) Snowthrower
38095 (0000001-0999999)(1980) Snowthrower
38070 (8000001-8999999)(1978) Snowthrower
38060 (8000001-8999999)(1978) Snowthrower
31995 (7000001-7999999)(1977) Snowthrower
31995 (6000001-6999999)(1976) Snowthrower
31995 (5000001-5999999)(1975) Snowthrower
38090 (7000001-7999999)(1987) Snowthrower
38090 (6000001-6999999)(1986) Snowthrower
38090 (5000001-5999999)(1985) Snowthrower
38090 (4000001-4999999)(1984) Snowthrower
38090 (3000001-3999999)(1983) Snowthrower
38090 (2000001-2999999)(1982) Snowthrower
38090 (1000001-1999999)(1981) Snowthrower
38090 (0000001-0999999)(1980) Snowthrower
38090 (9000001-9999999)(1979) Snowthrower
38095 (7000001-7999999)(1987) Snowthrower
38095 (6000001-6999999)(1986) Snowthrower
38095 (5000001-5999999)(1985) Snowthrower
38095 (4000001-4999999)(1984) Snowthrower
38095 (3000001-3999999)(1983) Snowthrower
38095 (2000001-2999999)(1982) Snowthrower
38095 (1000001-1999999)(1981) Snowthrower
38150 (7000001-7999999)(1987) Snowthrower
38150 (6000001-6999999)(1986) Snowthrower
38150 (5000001-5999999)(1985) Snowthrower
38150 (4000001-4999999)(1984) Snowthrower
38150 (2000001-2999999)(1982) Snowthrower
38150 (1000001-1999999)(1981) Snowthrower
38150 (0000001-0999999)(1980) Snowthrower
38150 (9000001-9999999)(1979) Snowthrower
38155 (7000001-7999999)(1987) Snowthrower
38155 (6000001-6999999)(1986) Snowthrower
38155 (5000001-5999999)(1985) Snowthrower
38155 (4000001-4999999)(1984) Snowthrower
38155 (2000001-2999999)(1982) Snowthrower
38155 (1000001-1999999)(1981) Snowthrower
38565 (9000001-9999999)(1989) Snowthrower
38565 (8000001-8999999)(1988) Snowthrower
38566 (59000001-59999999)(1995) Snowthrower
38566 (49000001-49999999)(1994) Snowthrower
38566 (3900001-3999999)(1993) Snowthrower
38566 (2000001-2999999)(1992) Snowthrower
38566 (1000001-1999999)(1991) Snowthrower
38566 (0000001-0999999)(1990) Snowthrower
38570 (5900001-5999999)(1995) Snowthrower
38570 (4900001-4999999)(1994) Snowthrower
38570 (3900001-3999999)(1993) Snowthrower
38570 (2000001-2999999)(1992) Snowthrower
38570 (1000001-1999999)(1991) Snowthrower
38570 (0000001-0999999)(1990) Snowthrower
38570 (8000001-8999999)(1988) Snowthrower

Expand the 150+ compatible machines

Repair Instructions: Submitted by Customers Like You

3 of 3 people found this instruction helpful

Tool Type:

Lawn Tractor

Parts Used:

Rocker Cover Gasket - 690971

Oil Seal - 391086S

Crankcase Gasket With Bolts - 594195

Rod-Connecting (Standard) - 84007297

Cylinder Head Gasket - 693997

Piston Assembly (Standard) - 792023

Repair Difficulty:

Hard

Time Spent Repairing:

More than 2 hours

Tools Used:

Socket set, Wrench Set

26 hp B/S twin broken rod repair

I disassembled the engine. made a list of parts. I looked up the torque values online and using the new parts reassembled the engine. It fired right off and ran smooth. The parts I received from Replacement parts fit perfectly and the price was right. They were delivered in a timely manner.

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2 of 2 people found this instruction helpful

Tool Type:

Lawn Tractor

Parts Used:

Oil Seal - 391086S

Tube-Breather - 692293

Repair Difficulty:

Medium

Time Spent Repairing:

More than 2 hours

Tools Used:

Screwdriver, Socket set, Wrench Set, Adjustable Wrench

My engine on my Simplicity tractor lost its lower oil seal.

I had to remove the 8HP engine and associated parts from the tractor.
I didn't have to break down the engine, but removed old seal.
Cleaned the area and used Loctite to re-install new oil seal
Used JB Weld under the seal to hopefully keep the seal in place.
Put engine and all associated parts back on the tractor. Engine did good and no leaks.
Replaced Tube breather on the Breather Assembly too.
Tractor is 48 years old and it's nice to know I can still get parts for it.
THANK YOU !!!!!!!!!!!!!!!

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2 of 2 people found this instruction helpful

Tool Type:

Lawn Tractor

Parts Used:

Crankcase Gasket - 697110

Oil Seal - 391086S

Repair Difficulty:

Medium

Time Spent Repairing:

1-2 hours

Tools Used:

Socket set, Wrench Set, Item to drive the oil seal in to place.

Leaked oil

Remove the oil pan is all and then remove the oil seal from the oil pan and clean the old gasket and replace the new one, and replace the oil pan, everything worked good.

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2 of 2 people found this instruction helpful

Tool Type:

Lawn Tractor

Parts Used:

Oil Seal - 391086S

Gasket-Crankcase - 270916

Repair Difficulty:

Easy

Time Spent Repairing:

15-30 minutes

Tools Used:

Screwdriver, Socket set, Wrench Set, Adjustable Wrench

Crankcase gasket and oil seal leaking on an old lawn tractor

Removed engine drained oil, removed the crankcase cover.
Replaced gasket and the new oil seal

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Tool Type:

Lawn Tractor

Parts Used:

Oil Seal - 391086S

Collector-Oil - 794389

Repair Difficulty:

Easy

Time Spent Repairing:

More than 2 hours

Tools Used:

Screwdriver, Pliers, Socket set, Wrench Set, piston ring compressor. wash tub. Power washer sher

lower case was leaking

disassembled interior motor cleaned it all up . valves job and all new gaskets, than put it all back together.

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Tool Type:

Lawn Tractor

Parts Used:

Pin-Piston/Standard - 690229

Oil Seal - 391086S

Crankcase Gasket With Bolts - 594195

Piston Assembly (Standard) - 793647

Repair Difficulty:

Medium

Time Spent Repairing:

More than 2 hours

Tools Used:

Screwdriver, Power Drill, Socket set, Adjustable Wrench

My neighbors mower made a loud clunk and bang with lots of black smoke

They said I could have it so when I couldn't get it started I began looking into it and found the connecting rod and piston damaged on the number one cylinder. I ordered the parts necessary and completed the repair. The web site is very easy to navigate and shipping is quick.

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Tool Type:

Lawn Tractor

Parts Used:

Oil Seal - 391086S

Cylinder Head Gasket - 271866S

Oil Seal - 291675S

Repair Difficulty:

Easy

Time Spent Repairing:

15-30 minutes

Tools Used:

Screwdriver, Power Drill, Socket set, Wrench Set

Compression spring was broken off the can-shaft

Drain the oil, remove motor from the frame, turned upside down to remove crankcase cover, pulled old cam-shaft out, found broken compression spring unattached, put in new parts, gaskets, seals, then adjusted compression valves to 0.004 change oil filter and put fresh oil in. The part fit perfectly! Thank you for helping me with my problems.

Thank you!

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Tool Type:

Lawn Tractor

Parts Used:

Oil Seal - 391086S

Crankcase Gasket With Bolts - 594195

Repair Difficulty:

Medium

Time Spent Repairing:

More than 2 hours

Tools Used:

Screwdriver, Pliers, Socket set, Wrench Set, Pneumatic impact driver, 3/8-1/4 rachet

Engine lost compression

Drained fluids and removed engine in accordance with shop manual purchased through ereplacement parts.
Dissembled and ordered replacement parts.
Reassembled engine with new parts paying particular attention to torque specifications.
I am knowledgeable of mechanical properties and utilize the YouTube sites and repair manual, common sense and patience has helped me to save $$ while getting the satisfaction from achievement.

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Tool Type:

Engine

Parts Used:

Oil Seal - 391086S

Gasket-Crkcse (.015 Thick)(Stand) - 692221

Repair Difficulty:

Medium

Time Spent Repairing:

More than 2 hours

Tools Used:

Screwdriver, Pliers, Socket set, Wrench Set

The dummy ran it without checking the oil level, signed The Dummy

First I had to disassembled the Baker Chipper Vac in order to get the engine off. Pulling the rotor head off the crankshaft end took some time with a shop made puller. Once I got that off it was easy enough to split the case and determine that the rod and piston along with the crankshaft surface were ok. What had seized was the crank bearing on the inside of the case. Once I got lubrication to it it started to turn freely. At that point I decided to go no further and ordered parts from Ereplacementparts. Engine is probably 30 years old but Ereplacementparts had what I needed for the Briggs and Stratton.
THANKS

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Tool Type:

Lawn Tractor

Parts Used:

Oil Seal - 795387

Oil Seal - 391086S

Seal-O Ring - 690589

Spring-Governor (White) - 698071

Spring-Governed Idle - 691019

Link-Throttle (Used With Plastic Intake Manifold) - 695238

Washer (Governor Gear) - 690412

Bracket-Control - 592661

Retainer-Governor Shaft - 698290

Seal-Governor Shaft - 790574

Exhaust Gasket - 690970

Gear-Governor - 793338

Repair Difficulty:

Easy

Time Spent Repairing:

More than 2 hours

Tools Used:

Screwdriver, Pliers, Socket set, Wrench Set, Adjustable Wrench

governor was broke

took motor out , made repairs ..

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Reviews

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LOVE THESE GUYS

THEY TAKE REALLY GOOD CARE OF YOU. I BUY OFFTEN. Chris

chris - March 9, 2021 Verified Purchase

Quick, easy

oil seals, belt

Guest - December 3, 2020 Verified Purchase

Great source for parts

All of my equipment, as like me, has alot of age on it. The ability to get the parts I need guarantees that the equipment will still be productive as it ages further

Charlie - January 21, 2020 Verified Purchase

part worked as advertised

Fit perfectly and contained oil as required.

Bill - September 26, 2019 Verified Purchase

Replace an oil seal on an old engine.

I was surprised to find an oil seal to replace the one on a 42 year old engine. The seal fit perfectly and solved the problem. Great service!!

Lawrence - September 3, 2019 Verified Purchase

Verified Purchase

eReplacementParts Team

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