5-Speed Transmission 137-4105 for Exmark Metro Walk-Behind Mowers
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.
| Application | Fitment Notes |
|---|---|
| Exmark Metro 32 / 36 / 48 / 52 gear-drive mowers | Verify model and serial. |
| Exmark Metro HP / ECS double-belt drive models | Verify transmission number. |
Product Overview
This gearbox provides the five forward speed selections used by many Exmark commercial walk-behind mowers. Internal wear can cause noisy operation, difficulty selecting gears or loss of drive in one or more ratios.
Exmark lists 137-4105 as the current transmission and shows it replacing 1-323500, 132-4720 and E323500. It fits many 32-, 36-, 48- and 52-inch Metro gear-drive configurations depending on serial range.
Key Features & Performance
- 5-speed walk-behind mower transmission
- Current Exmark reference 137-4105
- Replaces 1-323500 and 132-4720
- Used on numerous Exmark Metro / Metro HP gear-drive models
Common Reasons for Replacement
- Transmission slips or will not stay in gear
- One or more speed ranges no longer drive
- Excessive gearbox noise or internal wear
Technical Specifications
- Speeds: 5
- Part Type: Mechanical Mower Transmission
OE / Reference Numbers
- 137-4105
- 1-323500
- 132-4720
- E323500
Frequently Asked Questions
How do I confirm compatibility? Use the mower model, serial number and one of the listed transmission numbers before ordering.
Is this an OEM part? This listing is for a replacement part. Brand names and OE/reference numbers are used to identify fitment unless the listing specifically states that the item is genuine OEM.