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Lawn Mower Transmission Replacement

Lawn Mower Transmission Replacement parts from Repair Clinic are genuine OEM parts built to fit your model. Restore self-propel drive with our huge in-stock selection, same-day shipping, 365-day returns, price match guarantee, and expert repair guidance for dependable mower performance.

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172 results for 
Transmission
Transmission, Brake & Clutch
Lawn Mower
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Skill Level (2)
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Product is a manufacturer part
20001-VL0-S00 Transmission
$112.26

Transmission assembly to drive the rear wheels

Skill Level (2)
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Product is a manufacturer part
121-9178 Transmission
$135.95

Transmission assembly for a walk behind lawn mower. If the mowers self-propel feature does not work, the transmission may be defective.

Skill Level (3)
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Product is a manufacturer part
106-3955 Transmission
$148.31

Lawn mower transmission assembly (front wheel drive). If the transmission is defective, the self-propel wheels won't turn properly. Before replacing the transmission, inspect the belt to ensure that it is providing the proper amount of tension.

Skill Level (2)
skill level dotskill level dotskill level dotskill level dot
Product is a manufacturer part
106-3956 Transmission
$145.22

Lawn mower transmission assembly for rear wheel drive models. If the self-propel drive wheels do not engage properly the transmission may be defective. Before replacing the transmission ensure the belt is applying the proper tension to the transmission pulley.

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We'll match any price offered by our direct competitors on all genuine OEM Lawn Mower replacement parts
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Get peace of mind with the real thing—genuine OEM Lawn Mower parts.

Lawn Mower Transmission Replacement Parts

When your mower loses power or won't engage, transmission and drive system failures are often the culprit. Repair Clinic stocks genuine OEM replacements including belts, pulleys, transaxles, and clutch parts for, and models. We help you find exact-match parts that restore smooth operation and self-propel function.

Summer's peak mowing season means transmission problems can't wait. Our verified parts help support proper fit and performance on your specific model.

  • Belts & Pulleys: Cracked, slipping, or broken drive belts causing loss of power or engagement
  • Transaxles: Grinding noises, stuck in gear, or complete drive failure requiring transmission replacement
  • Clutch Cables: Frayed or broken cables preventing proper clutch engagement and disengagement
  • Control Levers: Bent or stuck transmission control parts affecting gear selection
  • Idler Pulleys: Worn pulleys reducing belt tension and causing belt slipping

Find your model number on the equipment nameplate, then browse Lawn Mower transmission parts by brand and model for help ensure compatibility.

Lawn Mower Transmission & Drive System Questions

Why did my or mower suddenly lose drive power?

The most common causes are a broken or slipped drive belt, worn transaxle, or disengaged clutch cable. Before ordering parts, check if the belt is visibly cracked or off the pulley. If the belt looks fine, the transaxle or internal transmission parts likely need replacement. Genuine OEM parts ensure proper gear ratios and engagement.

How do I find my lawn mower's model number for transmission parts?

Look for the equipment nameplate on the frame (usually under the seat or on the rear panel). It contains the brand, model number, and serial number. Write down the complete model number before shopping—transmission parts vary significantly between models, especially for, and brands.

Can I replace just the belt instead of the whole transmission?

Often, yes. If your mower has no drive but the engine runs, start with the belt and idler pulley—they're affordable and frequently the problem. However, if you hear grinding or feel resistance when shifting, the transaxle itself is damaged and requires full replacement for safe operation.

What's the difference between a transaxle and a transmission in lawn mowers?

A transaxle combines the transmission and rear axle into one sealed unit, common on mid-size and riding mowers. Smaller push mowers often use simpler transmission belts and pulleys. Check your manual or model number to confirm which type your mower uses before ordering replacement parts.

Man examines the dipstick on a gas lawn mower for problems after his mower won't start
Man checking a lawn mower in grassy area

Order Lawn Mower Transmission Replacement Parts Online

Ensure smooth operation of your Lawn Mower by replacing worn or faulty transmission parts with genuine OEM parts from Repair Clinic. A well-maintained transmission is key for the efficient transfer of power, promoting better maneuverability and performance. Use our model number lookup tool to find the exact transmission part you need. Enjoy the convenience of same-day shipping, No-Hassle 365-Day Returns, and our Price Match Guarantee. For expert advice on installation, visit our Lawn Mower Repair Help page. Find additional Lawn Mower Steering Parts for comprehensive repair solutions.

Narrow Lawn Mower Parts to Your Exact Model

Check the frame beneath the seat, the mower deck, or the engine housing for the equipment nameplate. It usually lists the complete model number along with the brand and serial number. Record every letter, number, and hyphen exactly as shown, since similar lawn mower models can use different parts throughout the unit. Enter the model number in the search bar to narrow the catalog to parts that fit your specific mower, including transmission and drive parts. The model number applies to the entire lawn mower, not just one replacement part, so using it first helps you avoid compatibility guesswork and find the right match faster.

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Fix Your Lawn Mower with Online Repair Help

The online repair library at Repair Clinic covers Lawn Mower diagnostics, part testing, and installation from start to finish. Symptom-based articles narrow the failing component, and matching repair videos or step-by-step written guides walk you through the fix. Use the model number lookup to confirm the exact OEM part before you order, then follow the exploded-view diagrams for a clean reassembly.

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