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SKU:
NLT2J00455
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12V 5-Pin Relay GY20437-D for John Deere Lawn Tractors and Mowers
$22.99
In Stock
$22.99
Sale price
$22.99
Regular price
This aftermarket 12-volt, 30-amp, 5-pin relay replaces John Deere GY20437 and GY20437-D on compatible lawn tractors and riding mowers.
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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 107H, 107S
- John Deere D105, D110, D125, D130, D140, D155, D160, D170
- John Deere E100, E110, E120, E130, E140, E150, E160, E170, E180
- John Deere G100
- John Deere L100, L105, L107, L108, L110, L111, L118
- John Deere S100, S110, S120, S130, S140, S160, S170, S180, S220, S240
- John Deere X105, X106, X107, X115R, X116R, X117R, X125, X126, X127, X135R, X146R, X147R, X155R, X165, X166, X166R, X167, X167R
- Sabre 14.542GS, 1642HS, 1742HS, 1948GV, 1948HV, 2148HV, 2354HV, 2554HV, S2554
- Scotts L17.542, 17542, L17542, L17, 17, L1742, L2048, L2548, 2548
Product Overview
When a mower has power but a starter or control circuit only clicks—or works some of the time—the relay may no longer be carrying current cleanly. This five-terminal relay is used in several electrical functions across a large group of John Deere, Sabre, and Scotts machines.
Because the same symptom can come from a battery, fuse, safety switch, ignition switch, ground, or starter, test the circuit before swapping parts. Match the pin layout and numbers on the original relay.
Key Features & Performance
- 12V, 30A relay for compatible mower electrical circuits
- Five-terminal configuration
- Replacement for GY20437 and GY20437-D
- Broad John Deere, Sabre, and Scotts application coverage
- Useful for intermittent or failed relay-controlled functions
Replaces Part Numbers
- GY20437
- GY20437-D
Common Uses
- Repairing an intermittent starter or control circuit
- Replacing a relay with burnt or corroded terminals
- Resolving a tested relay that clicks but does not pass current
- Restoring a circuit that fails when the relay warms up
Technical Specifications
- Part Type: Electrical Relay
- Voltage: 12V
- Current Rating: 30A
- Terminal Count: 5
- Replacement Type: Aftermarket
Installation & Fitment
- Disconnect the battery
- Photograph the relay orientation before removal
- Compare all five terminal positions and markings
- Inspect the socket for heat damage or corrosion
- Test the affected circuit and safety interlocks afterward
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.
The relay may serve different circuits by model. Confirm GY20437/GY20437-D and the identical five-pin arrangement before purchase.
Frequently Asked Questions
Q: Can this fix a mower that only clicks? A: It can if the relay has failed, but a weak battery, cable, safety switch, solenoid, or starter can produce the same symptom.
Q: Is it a starter solenoid? A: No. It is a plug-in electrical relay used in control circuits.
Q: Does it fit Scotts and Sabre machines? A: Yes, the listed models use this relay, subject to the original number and pin layout.
Q: Is it OEM? A: No. It is an aftermarket relay.
Part Summary
keywords: John Deere GY20437 relay, GY20437-D replacement, John Deere mower 5 pin relay, 12V 30A lawn tractor relay, Sabre mower electrical relay, Scotts riding mower relay
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.