New fuel sender unit 37800-sj6-003 for Honda Acty Truck HA3, HA4 models 1990-1999, the float and resistance track that drive the dash fuel gauge.
Float arm assembly on the Honda Acty HA3, HA4 fuel sender unit 37800-sj6-003, the float that reads the fuel level inside the tank.
Angle view of the Honda Acty Truck fuel level sending unit 37800-sj6-003, showing the mounting flange and sender body.
Side view of the Honda Acty Truck fuel gauge sender 37800-sj6-003, showing the float arm travel and resistance track housing.
Rear view of the Honda Acty HA3, HA4 fuel sender unit 37800-sj6-003, showing the electrical terminals and tank flange.
Honda parts diagram showing fuel tank and sender unit 37800-sj6-003 placement for Honda Acty Truck HA3, HA4 models 1990-1999.
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New fuel sender unit 37800-sj6-003 for Honda Acty Truck HA3, HA4 models 1990-1999, the float and resistance track that drive the dash fuel gauge.Float arm assembly on the Honda Acty HA3, HA4 fuel sender unit 37800-sj6-003, the float that reads the fuel level inside the tank.Angle view of the Honda Acty Truck fuel level sending unit 37800-sj6-003, showing the mounting flange and sender body.Side view of the Honda Acty Truck fuel gauge sender 37800-sj6-003, showing the float arm travel and resistance track housing.Rear view of the Honda Acty HA3, HA4 fuel sender unit 37800-sj6-003, showing the electrical terminals and tank flange.Honda parts diagram showing fuel tank and sender unit 37800-sj6-003 placement for Honda Acty Truck HA3, HA4 models 1990-1999.

Fuel Sender Unit - Honda Acty Truck HA3, HA4 Models - 1990-1999

Oiwa Garage
No reviews
Price:
$131.35
Stock:
In stock

Need help? Call or Text: 562-661-8862

Description

This fuel sender unit fits the Honda Acty Truck HA3, HA4 (1990-1999). It reads the fuel level in the tank and drives the dash gauge - float, arm, and resistance track in one serviceable unit. Factory-style replacement for the original sender.

In Stock - ships from our California (USA) warehouse

Fast, reliable delivery - no overseas backorder wait.

Vehicle Fitment & Compatibility

Confirm your chassis code against the table below before ordering.

Honda Acty Truck HA3, HA4 (1990-1999) - fitment
Make Honda
Model Acty Truck
Chassis Codes HA3, HA4
Years 1990-1999
Part Type fuel sender unit

100% Fitment Guarantee

Not sure about fit? Add your chassis/VIN number at checkout and we confirm it before we ship. If a part does not fit your Acty, we exchange it or refund you in full.

Signs you need a new fuel sender

  • A fuel gauge stuck on empty or full
  • A needle that jumps, wanders, or reads wrong
  • A gauge that stopped responding after tank work

Features & Function

  • Float and arm read the true level in the tank
  • Resistance track drives the dash fuel gauge
  • Direct fit for the Acty tank sender flange

Installation Specifications

  • Difficulty: Moderate.
  • Estimated time: about 1 hour.
  • Required tools: A socket set and screwdrivers.

Oiwa Garage Tech Note

"Nine times out of ten a dead fuel gauge on these is the sender, not the dash. Before you fit the new unit, clean the connector at the tank - a corroded plug reads empty even with a good sender behind it."

Frequently Asked Questions

How do I know it is the sender and not the gauge?

With the key on, a needle that sits pinned on empty or full and never moves usually means a worn sender track or a stuck float. Clean the tank connector first - if the reading still misbehaves, the sender is the fix.

Do I need to drain the tank to fit it?

No full drain needed - just run the tank low first, since the sender mounts through the tank flange and less fuel makes the swap cleaner. Disconnect the battery before unplugging the sender connector.

Fitment verified by the Kei Truck specialists at Oiwa Garage · Listing updated July 2026.

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