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Onan
Lawn & Garden Engine

Model # B48M-GA018 Official Onan gas engine

Here are the diagrams and repair parts for Official Onan B48M-GA018 gas engine, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 263 parts  |
Filter 122-0338
#15

Oil system diagram

Filter

Part #122-0338

Replaced by #52-050-02-S1

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Manufacturer substitution
This part replaces 122-0338. Substitute parts can look different from the original.
BEST SELLER
$15.11 | 
9% OFF Phone Price : $16.67
In Stock
Lock 5/16" - Code 21bj, 21bk, 21bw 850-0045
#23

Fuel system diagram

Lock 5/16" - code 21bj, 21bk, 21bw

Part #850-0045

The manufacturer no longer makes this part, and there's no substitute part

Plug 167-0298
#9

Ignition diagram

Plug

Part #167-0298

Replaced by #857

?
Manufacturer substitution
This part replaces 167-0298. Substitute parts can look different from the original.
This item is not returnable
$6.34
In Stock
Flat Washer 526-0122
#40

Cylinder block diagram

Flat washer

Part #526-0122

The manufacturer no longer makes this part, and there's no substitute part

Flat Washer 526-0018
#39

Cylinder block diagram

Flat washer

Part #526-0018

The manufacturer no longer makes this part, and there's no substitute part

Element 140-1216
#4

Fuel system diagram

Element

Part #140-1216

Replaced by #45-083-02-S

?
Manufacturer substitution
This part replaces 140-1216. Substitute parts can look different from the original.
This item is not returnable
$25.09 | 
17% OFF Phone Price : $30.09
In Stock
Code 45bb 104-1351
#9

Crankshaft and flywheel diagram

Code 45bb

Part #104-1351

The manufacturer no longer makes this part, and there's no substitute part

Ring 113-0189-10
#4C

Piston and rod diagram

Ring

Part #113-0189-10

The manufacturer no longer makes this part, and there's no substitute part

Engines With Standard Rear Bearing Plate 110-3150
#1A

Cylinder block diagram

Engines with standard rear bearing plate

Part #110-3150

The manufacturer no longer makes this part, and there's no substitute part

Valve 123-1175
#21

Cylinder block diagram

Valve

Part #123-1175

The manufacturer no longer makes this part, and there's no substitute part

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