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Onan
Lawn & Garden Engine

Model # B48G-GA020/3858C Official Onan gas engine

Here are the diagrams and repair parts for Official Onan B48G-GA020-3858C 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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Showing 10 of 297 parts  |
Line 503-0874
#38

Fuel system diagram

Line

Part #503-0874

Replaced by #30962

?
Manufacturer substitution
This part replaces 503-0874. Substitute parts can look different from the original.
This item is not returnable
$6.76 | 
13% OFF Phone Price : $7.76
In Stock
Plug 167-0291
#9

Ignition diagram

Plug

Part #167-0291

Replaced by #909

?
Manufacturer substitution
This part replaces 167-0291. Substitute parts can look different from the original.
This item is not returnable
$5.40
In Stock
Plug 517-0048
#2

Cylinder block diagram

Plug

Part #517-0048

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

Cover 140-1663
#2

Fuel system diagram

Cover

Part #140-1663

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

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

Screw 815-0519
#4

Crankshaft and flywheel diagram

Screw

Part #815-0519

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

Lawn & Garden Equipment Engine Screw 821-0014
#5

Crankshaft and flywheel diagram

Lawn & garden equipment engine screw

Part #821-0014

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

Lawn & Garden Equipment Engine Internal Ring 518-0311
#3

Piston and rod diagram

Lawn & garden equipment engine internal ring

Part #518-0311

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

Head 110-2878
#37A

Cylinder block diagram

Head

Part #110-2878

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

Screw 800-0046
Screw

Part #800-0046

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

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