Exterior Components› Truck Bed and Trunk Components

ATTWOOD MARI

90D THRU HULL (BLACK)

$25.33

SKU: A09O 3870-1

In Stock
In Stock
Ships by Jun 18
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Attwood Mari 3870-1 is a 90-degree thru-hull connector designed for marine applications. It is ideal for tight installations, such as livewell overflow drains, and its angled design helps to prevent hose kinking. This connector is made of plastic and comes in white.

Key specifications include a 1-1/8" inner diameter for hose size, a maximum hull thickness of 1-7/8", and a flange diameter of 2-7/16". The installation hole size required is 1-5/16", and it features a 7/8" drain plug. Plastic thru-hull connectors are intended for installation above the waterline only.

Fitment

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Specifications

BrandATTWOOD MARI
Part NumberA09O 3870-1

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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