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AAA 3700 PSI 2.5 GPM Replacement Triplex Pressure Washer Pump Kit for SIMPSON Gas Power Washer Pumps, 3/4" Shaft, Horizontal Engine Fit, PowerBoost (90037)

Name: AAA 3700 PSI 2.5 GPM Replacement Triplex Pressure Washer Pump Kit for SIMPSON Gas Power Washer Pumps, 3/4" Shaft, Horizontal Engine Fit, PowerBoost
Brand: Aaa
SKU: 17071690
Price: 3974344.60 MGA
Availability: InStock
Rating: 4.5 (10 reviews)

Product ID: 17071690

Details

Brand
AAA
Color
Black
Global Trade Identification Number
Item Weight
9 Pounds
Material
Brass
Maximum Flow Rate
2.5 Gallons

💧2.5 GPM flow rate

💨3700 PSI max pressure

⚙️3/4" shaft, horizontal engine fit

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3974344Ar

Duties & taxes included

In stock

Sold byAmazon MadagascarDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Revive your pressure washer with power and precision!

BUILT TO LAST - Durable brass manifold and dual oversized ball bearings reduce friction and extend pump life.
PLUG PLAY FIT - SAE standard bolt pattern ensures seamless installation on most gas pressure washers with horizontal engines.
SMART MAINTENANCE - Sight glass and advanced oil seals eliminate dipstick hassle—monitor oil quality at a glance.
OVERHEAT PROTECTION - Thermal relief valve safeguards your pump from overheating during intense cleaning sessions.
POWER BOOST PRECISION - Adjust nozzle pressure effortlessly with the integrated hand knob for tailored cleaning power.

The AAA 3700 PSI 2.5 GPM Triplex Pressure Washer Pump Kit is a robust replacement designed for SIMPSON and compatible gas-powered washers with horizontal engines and 3/4" shafts. Featuring PowerBoost Technology for adjustable pressure, durable brass construction, and easy maintenance with a sight glass oil monitor, this kit includes all necessary hardware for quick installation. Ideal for professionals and DIYers aiming to restore peak cleaning performance without replacing the entire unit.

Specifications

ASIN	B00TQLMNMC
Best Sellers Rank	#29,375 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #17 in Pressure Washer Pumps
Brand	AAA
Color	Black
Customer Reviews	4.4 4.4 out of 5 stars (502)
Global Trade Identification Number	00879399002076, 08793990020760
Is Discontinued By Manufacturer	No
Item Weight	9 pounds
Item model number	90037
Manufacturer	AAA Pumps
Material	Brass
Maximum Flow Rate	2.5 Gallons Per Minute
Power Source	Gas Powered
Product Dimensions	12"L x 9"W x 4"H
Style	3700 PSI at 2.5 GPM
UPC	879399002076
Voltage	120.0

Reviews

P**S

Perfect fit and good quality.

Easy replacement and came with everything needed. Even new bolts. Works perfectly and saved me from buying a new pressure washer.

17.02.2026

C**R

Works great!

Easy to install works great. I got it for my 3600psi DeWalt pressure washer.

14.12.2025

S**K

Quilty replacement parts. Works perfectly

Easy to install and works great! Next day delivery was awesome. Thanks

14.09.2025

E**D

Good

Good quality

7.12.2025

J**N

Part failure right away

Pump failed after a few hours and the seller has not option for support or replacement

4.12.2025

K**R

Good power

A perfect fit for my dewalt washer from home depot

4.02.2026

A**R

Good purchase

I bought few years ago and still works fine forme

5.02.2025

S**Y

Great product

Easy install and still running strong 8 months later. Highly recommend this pump

16.07.2025

T**H

Undid the 4 bolts, slid off old pump, slid on this pump, tightened bolts and tested. Worked perfectly right off the bat !

22.06.2022

A**R

Everything was perfect

25.06.2023

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3974344Ar

Duties & taxes included

In stock

Sold byAmazon MadagascarDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Madagascar.

Secure transaction

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