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116711571988-0 - Northline Parts

Carburetor AM132119 for John Deere STX30 STX38 12.5HP Kohler Engines

SKU: NLT1Q00754
$22.99 In Stock
$22.99
Sale price  $22.99 Regular price 
Ships for free in 2–4 business days.
This aftermarket carburetor replaces John Deere AM132119 and Kohler references 12 853 149-S and 12 853 80-S for compatible STX30, STX38 12.5-hp, and select STX46 and LX255 applications.
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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 STX30 with matching Kohler engine
  • John Deere STX38 12.5-hp applications using AM132119
  • Select John Deere STX46 applications using the same carburetor
  • Select John Deere LX255 applications using the same carburetor
  • Compatible Kohler CV493 and related applications only after specification verification

Product Overview

A lawn tractor that hunts, runs only with choke, leaks fuel, or loses power when the deck engages may have a carburetor fault after ignition, compression, valve, fuel-pump, intake, and governor checks. This replacement is intended for matching Kohler-powered John Deere configurations.

STX38 and STX46 machines were produced with different engines and carburetors. Confirm the tractor serial, engine model and specification, solenoid, linkage, flange, and original reference.

Key Features & Performance

  • Replacement for AM132119-family applications
  • Supports select Kohler-powered John Deere lawn tractors
  • Restores fuel metering after confirmed internal carburetor failure
  • Aftermarket assembly for matching single-cylinder configurations

Replaces Part Numbers

  • AM132119
  • 12 853 149-S
  • 12 853 80-S
  • 12853149-S

Common Uses

  • Correcting surging or choke-only operation
  • Repairing flooding and fuel leakage
  • Restoring engine power under deck load
  • Replacing a corroded or damaged carburetor

Technical Specifications

  • Product Type: Lawn-tractor carburetor
  • Compatible Brand: John Deere with matching Kohler engine
  • Primary Models: STX30 and STX38 12.5-hp matching applications
  • Replacement Type: Aftermarket

Installation & Fitment

  • Verify tractor and engine identification
  • Inspect fuel supply, ignition, compression, and intake seals
  • Match the shutoff solenoid and governor linkages
  • Test leak-free operation and correct governed speed

Compatibility Notice

Do not order by STX model name alone. Some STX38, STX46, and LX255 machines use different engines or fuel systems.

Frequently Asked Questions

Q: Will it fit every STX38? A: No. It is for matching 12.5-hp Kohler configurations using the listed reference.

Q: Why does the mower die when the blades engage? A: Fuel delivery can be one cause, but deck drag, belts, ignition, compression, and governor response must be checked.

Q: How do I confirm it? A: Match AM132119 and the engine model/specification plus physical design.

Part Summary

keywords: John Deere STX30 carburetor, STX38 12.5HP carburetor, AM132119 replacement, STX46 carburetor fit, LX255 fuel system part, Kohler lawn tractor surging, 12853149-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.

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