AC 40259 Delco Mechanical Fuel Pump V8 A/c

( Brand: Ac ), ( Type: Fuel Pump ), ( Fuel Type: Gasoline ), ( Drive Type: Mechanical ), ( Manufacturer Part Number: 40259 )

Review AC Delco Mechanical Fuel Pump Oldsmobile V8 Without A/c fits 400 425 1965

Delco AC 40259 Mechanical Fuel Pump for Oldsmobile V8 1965 400, 425, and A/C

The Delco AC 40259 is a mechanical fuel pump specifically designed for Oldsmobile V8 engines manufactured in 1965. This fuel pump is suitable for 400, 425, and A/C models, making it an essential component for Oldsmobile enthusiasts seeking authentic replacement parts.

The Delco AC 40259 is a mechanical fuel pump, meaning it relies on engine vacuum to function. It features a robust design, with a compact housing that measures approximately 5 inches long, 3 inches wide, and 2 inches tall. The pump is constructed using high-quality materials, ensuring durability and longevity.

This fuel pump is characterized by its unique, inverted-funnel design, which enables it to effectively draw fuel from the fuel tank and deliver it to the engine. The inlet and outlet ports are strategically placed on the pump housing, allowing for easy installation and connection to the vehicle's fuel system.

The Delco AC 40259 comes with a new gasket to ensure a proper seal during installation. This fuel pump is also compatible with aftermarket carburetors and intake manifolds, providing flexibility for various engine modifications.

Installing the Delco AC 40259 mechanical fuel pump is a straightforward process. The pump is typically connected to the fuel tank through the fuel sender unit, and to the engine through the carburetor or intake manifold. Proper installation instructions will be provided with the purchase of this fuel pump, ensuring a hassle-free experience for the user.

In summary, the Delco AC 40259 mechanical fuel pump is an ideal replacement part for Oldsmobile V8 engines from 1965. Its robust design, inverted-funnel construction, and compatibility with various aftermarket components make it a valuable investment for Oldsmobile enthusiasts looking to maintain or restore their classic vehicles.

Buying a Delco Mechanical Fuel Pump (AC 40259) for an Oldsmobile V8 1965 400/425 A/C comes with its own set of advantages and disadvantages. Let's explore them:

1. Availability: Old Delco parts like the AC 40259 are readily available in the aftermarket, making it easier for classic car owners to find and purchase.

2. Authenticity: Buying an original Delco part ensures authenticity, as it is designed and manufactured by the original equipment manufacturer.

3. Fitment: The AC 40259 is specifically designed for Oldsmobile V8 cars from the 1965 model year, ensuring a perfect fit.

4. Durability: Old Delco parts are known for their durability and reliability, making them a popular choice among classic car enthusiasts.

1. Cost: Original parts like the AC 40259 can be more expensive than aftermarket alternatives.

2. Availability of Spare Parts: Old Delco parts may not have readily available spare parts or replacements, which could lead to longer downtime in case of a failure.

3. Complexity of Installation: Installing an original part like the AC 40259 may require specialized knowledge and tools, which could add to the cost and time of the repair.

Buying a Delco Mechanical Fuel Pump (AC 40259) for an Oldsmobile V8 1965 400/425 A/C comes with both advantages and disadvantages. While the advantages include availability, authenticity, fitment, and durability, the disadvantages include cost, availability of spare parts, and complexity of installation.

If you're a classic car enthusiast and prioritize authenticity and durability over cost, then buying an original Delco Mechanical Fuel Pump (AC 40259) for your Oldsmobile V8 1965 400/425 A/C is a good choice. However, if you're on a budget or prefer a more cost-effective solution, you may want to consider aftermarket alternatives. Ultimately, the decision depends on your personal preferences, budget, and the level of authenticity you desire for your classic car.

Details:

Notes: Verify compatibility with your specific Oldsmobile model before purchase; photos show the exact item offered. Fitment per box label: Oldsmobile V8 1965 66 400 and 425 engines, without factory air conditioning. Visible markings: AC cast logo on body; Made in USA stamped diaphragm housing. Material/finish: Cast metal body and steel lever; natural finish with light storage patina.

AC Delco 40259 Mechanical Fuel Pump Oldsmobile V8 1965 66 400 425 w/o A/C. Brand: AC Delco; Part type: Mechanical fuel pump; number: 40259. Untested for pressure/flow; box not included; brass fitting included. Label captured from box: AC 40259 FUEL PUMP OLDS 8 1965-66 400 425 ENGINES, W/O.

Design/features: Lever-Actuated arm; two-bolt mounting flange; one threaded port and hose barb. Need something extra. Includes: Pump and brass adapter fitting shown; gasket mounting hardware not included. Light surface wear and minor oxidation from storage ; lever ports intact.

part #: 40259 prices

• $33.49-$55.95

specifications pumpunite:

• for models: 400, 425
• for makes: Oldsmobile
• for years: 1965
• brand: Ac
• type: Fuel Pump
• fuel type: Gasoline
• drive type: Mechanical
• manufacturer part number: 40259

seller pumpunite:

• # reviews: 3107
• rating: 100.0%
• city: Abbeville, South Carolina

payments pumpunite:

• other
• credit card: Mastercard
• wallet: Paypal

shipping pumpunite:

• carrier: USPS
• transit: 4-10 Days
• cost: $9.99
• service: USPS Ground Advantage, USPS Priority Mail
• type: Fixed
• class: Standard, Expedited

offer pumpunite:

• best offers: True
• availability: In Stock
• options: Ship-to-home
• started: December 23, 2025
• sold: 0
• quantity: 1

general pumpunite:

• condition: Used
• Car Truck Parts Accessories > Air Fuel Delivery > Fuel Pumps Sending Units

returns pumpunite:

• policy: Returns Accepted
• time: 14 Days
• paid by: Buyer

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