Skip to product information
s-l1600_3005c503-e42d-481c-8c33-10545fa4454d - Northline Parts

Carburetor AM125355 for John Deere LT133 LT150 LT155 LTR155 GS30

SKU: NLT1Q00604
$28.99 In Stock
$28.99
Sale price  $28.99 Regular price 
Ships for free in 2–4 business days.
This aftermarket carburetor replaces John Deere AM125355 and Kohler references 12 853 57-S and 12 853 80-S for compatible LT133, LT150, LT155, LTR155, GS30, and CH-series engine applications.
Estimated delivery between
Shop at Northline Parts Best Customer Service Best Online Parts

Let Northline Parts Do the Heavy Lifting for You!

Not sure which part you need? Our team can help you find the right replacement.

Parts Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT

Live Chat: Available 24/7

I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks

Edward H. — Verified customer

Compatible Models

We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.

Compatible equipment / model
  • John Deere LT133
  • John Deere LT150
  • John Deere LT155
  • John Deere LTR155
  • John Deere GS30
  • Select Kohler CH11, CH13, CH14, CH15, and CH450 applications using the matching carburetor

Product Overview

Hard starting, surging, fuel leakage, or power loss when the mower deck engages can point to a carburetor issue once fuel supply, ignition, compression, valve condition, intake sealing, and governor operation are checked. This replacement is intended for matching Kohler-powered John Deere equipment.

The mower model and engine family both matter. Match the Kohler specification, solenoid, linkage, mounting flange, air-cleaner interface, and original number.

Key Features & Performance

  • Replacement for AM125355-compatible applications
  • Supports select Kohler CH11-CH15 and CH450 engine configurations
  • Useful for persistent fuel leakage or internal contamination
  • Aftermarket assembly for matching John Deere equipment

Replaces Part Numbers

  • AM125355
  • 1285380S
  • 12 853 57-S
  • 12 853 80-S

Common Uses

  • Correcting surge or choke-only running
  • Repairing bowl leakage or flooding
  • Restoring power under deck load
  • Replacing a damaged or corroded carburetor

Technical Specifications

  • Product Type: Lawn-equipment carburetor
  • Compatible Brand: John Deere with matching Kohler engine
  • Engine Families: Select CH11-CH15 and CH450
  • Replacement Type: Aftermarket

Installation & Fitment

  • Verify tractor serial and full engine specification
  • Check fuel pump, spark, compression, valves, and intake seals
  • Match shutoff solenoid and linkage positions
  • Test for leaks and correct governed operation

Compatibility Notice

Not every listed mower or Kohler engine revision uses the same carburetor. Match AM125355 or an approved cross-reference and the complete physical design.

Frequently Asked Questions

Q: Will this fit an LT155 with any engine? A: Only versions using the matching Kohler engine and carburetor.

Q: Can deck drag feel like engine power loss? A: Yes. Inspect belt routing, spindle bearings, and deck condition as well.

Q: How do I confirm it? A: Use the mower serial, engine model/specification, original number, and connector design.

Part Summary

keywords: John Deere AM125355 carburetor, LT133 carburetor replacement, LT150 fuel system part, LT155 carburetor fit, LTR155 mower carburetor, Kohler CH15 carburetor repair, 12 853 57-S replacement, aftermarket John Deere carburetor

Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.

Customers also purchased