Moeller Marine 032640 Aluminum 40 Gallon Diesel Fuel Tank, 26 in. L x 20.5 in. W x 21.25 in. H

The Moeller Marine 032640 is a permanent, below-deck aluminum fuel tank built for diesel-powered boats, sized to hold 40 gallons and measuring 26.00 in. L x 20.50 in. W x 21.25 in. H (660 mm L x 521 mm W x 540 mm H). It is configured for diesel return applications and is fitted with a single fuel pickup and an ESU Universal Diesel Return sender (6-24 in.), so it is ready for installations that require fuel to be routed back to the tank rather than a non-return setup.

The tank shell is machined aluminum, chosen for its resistance to corrosion and pitting from ethanol and biodiesel exposure, and it carries a UV rating of 8 with a temperature rating of -40 F to 176 F for durability in a marine engine compartment. The fill neck and withdrawal/vent fittings are molded directly into the shell rather than bolted on, reducing potential leak points, and the tank uses ABYC-compliant fittings with seamless connections to rigid low-permeation hoses. A machined aluminum 3/8 in. Withdrawal fitting with a 360-degree swivel poplock is included for convenient hose hook-up during installation.

This is not a belly tank configuration. Mounting requires a bracket tie down, and the 032640 is designed to work with tie-down bracket part number 035710 or 300110.

Specifications

• Brand: Moeller
• Manufacturer Part Number: 032640
• Capacity: 40 gallons
• Fuel Type: Diesel
• Dimensions: 26.00 in. L x 20.50 in. W x 21.25 in. H (660 mm L x 521 mm W x 540 mm H)
• Weight: 22.55 pounds
• Material: Aluminum
• Number of Fuel Pickups: 1
• Diesel Return: Yes
• Sender: ESU Universal Diesel Return, 6-24 in.
• Bracket Tie Down: 035710 or 300110
• Belly Tank: No
• Withdrawal Fitting: 3/8 in. Machined aluminum, 360-degree swivel poplock
• UV Rating: 8
• Temperature Rating: -40 F to 176 F

Fitment

Below-deck permanent installation for diesel fuel systems; requires bracket tie down 035710 or 300110 (sold separately) for mounting.

Replaces (OEM)

No OEM cross-reference numbers are listed for this part.

Frequently Asked Questions

What is the capacity of the Moeller 032640 fuel tank? The Moeller Marine 032640 holds 40 gallons and is configured for diesel fuel systems.

What are the exact dimensions of this tank? The 032640 measures 26.00 in. L x 20.50 in. W x 21.25 in. H (660 mm L x 521 mm W x 540 mm H).

Is this tank designed for diesel or gasoline? Yes, the 032640 is built for diesel fuel and includes a diesel return sender, so it is not intended for a non-return gasoline setup.

How much does the Moeller 032640 weigh? This tank weighs 22.55 pounds.

What material is the tank made from? The 032640 is made from machined aluminum, which resists corrosion and pitting from ethanol and biodiesel exposure.

How many fuel pickups does this tank have? The 032640 has a single fuel pickup, along with an ESU Universal Diesel Return sender (6-24 in.).

What bracket do I need to mount this tank? Mounting the 032640 requires a bracket tie down, using either part number 035710 or 300110, which is sold separately.

Is the Moeller 032640 a belly tank? No, the 032640 is a standard below-deck permanent fuel tank, not a belly tank configuration.

What size is the withdrawal fitting? A 3/8 in. Machined aluminum withdrawal fitting with a 360-degree swivel poplock is built into the 032640 for hose hook-up.

What temperature range can this tank handle? The 032640 carries a temperature rating of -40 F to 176 F, along with a UV rating of 8 for sun exposure durability.

Are the fittings on this tank ABYC-compliant? Yes, the 032640 uses ABYC-compliant fittings with seamless connections to rigid low-permeation hoses.

Does the tank include the fill neck and vent fittings? Yes, the fill neck and withdrawal/vent fittings are molded directly into the shell of the 032640 rather than added as separate components.