Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
Orders

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
Onan
Lawn & Garden Engine

Model # B48G-GA018/3475A Official Onan engine

Here are the diagrams and repair parts for Official Onan B48G-GA018-3475A engine, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 262 parts  |
Filter 122-0338
#15

Oil system group diagram

Filter

Part #122-0338

Replaced by #52-050-02-S1

?
Manufacturer substitution
This part replaces 122-0338. Substitute parts can look different from the original.
BEST SELLER
$14.24 | 
12% OFF Phone Price : $16.24
In Stock
Pre-clner 140-1259
#3

Full system group diagram

Pre-clner

Part #140-1259

Replaced by #45-083-01-S

?
Manufacturer substitution
This part replaces 140-1259. Substitute parts can look different from the original.
This item is not returnable
$7.29 | 
12% OFF Phone Price : $8.29
In Stock
Flat Washer 526-0214
#10

Blower housing and governor group diagram

Flat washer

Part #526-0214

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

Flat Washer 526-0018
#39

Cylinder block group diagram

Flat washer

Part #526-0018

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

Tune-up Kit 160-1213
Tune-up kit

Part #160-1213

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

Screw 815-0261
#2

Blower housing and governor group diagram

Screw

Part #815-0261

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

Screw 800-0545
#11B

Gearcase, charging stator, breaker box and ignition group diagram

Screw

Part #800-0545

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

Breathr Tube 123-1277
#14

Full system group diagram

Breathr tube

Part #123-1277

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

Spacer 150-1257
#5

Piston, rod, camshaft, crankshaft and flywheel group diagram

Spacer

Part #150-1257

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

Flat Washer, Copper (21/64" I.d. X 9/16" O.d. X 1/16" Thick) 626-0065
#12

Oil system group diagram

Flat washer, copper (21/64" i.d. x 9/16" o.d. x 1/16" thick)

Part #626-0065

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

Symptoms for gas ranges

Why isn't my range's gas burner heating properly?

Main causes: gas supply problem, faulty pressure regulator, clogs in burner or orifice, control system failure, faulty t…

Read more

Why won't my range's gas burner spark or ignite?

Main causes: burner igniter switch failure, bad spark module, dirty or damaged spark electrode, wiring failure…

Read more

Repair guides for gas ranges

How to replace oven door hinges on a gas range

How to replace oven door hinges on a gas range

See how to replace the oven door hinges on a gas range yourself, in just 30 minutes.…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a range spark igniter switch

How to replace a range spark igniter switch

Follow these steps to replace the spark igniter switch—sometimes called a burner switch or spark switch—on a gas or dual…

Read more
Repair difficulty
Time required
 60 minutes or less
How to replace a gas range oven control board

How to replace a gas range oven control board

These step-by-step instructions explain how to replace an oven control board on a gas range…

Read more
Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your lawn & garden engines

View all
Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

Read more
What are the main components of a lawn mower?

What are the main components of a lawn mower?

Learn about the main parts of a lawn mower and when to replace parts.…

Read more

Parts & More

Downdraft Ventilation System
Downdraft Ventilation System Parts Kenmore