V-TWIN MANUFACTURING 12-1477 Oil Pump Bypass Kit

( Brand: V-twin Manufacturing ), ( Manufacturer Part Number: 12-1477 ), ( Country Of Origin: Taiwan ), ( Item Height: 0.50 ), ( Item Length: 3.25 ), ( Item Weight: 0.05 ), ( Item Width: 3.00 ), ( Type: Oil Pump Bypass Valve )

Review V TWIN MANUFACTURING Oil Pump Bypass Kit

Introducing the V-Twin 12-1477 Oil Pump Bypass Kit, an essential solution for enhancing the lubrication system of your V-twin engine. This kit is meticulously designed for select Harley-Davidson models, ensuring optimal performance and durability.

The heart of this kit is a high-quality, billet aluminum oil pump bypass valve. This valve is engineered to provide an efficient bypass flow, maintaining consistent oil pressure throughout the engine under various operating conditions. The valve's robust design ensures reliable operation, even in the most demanding environments.

The kit also includes a precision-machined bracket that securely mounts the bypass valve to your engine. The bracket is made from strong steel, providing the necessary support and stability while maintaining a clean, OEM-like appearance. Properly securing the bypass valve is crucial for effective operation and long-lasting performance.

The installation process is straightforward and can typically be completed in a few hours by an experienced motorcycle mechanic or an enthusiastic DIYer. The kit comes with clear, easy-to-follow instructions, as well as all necessary hardware.

Upgrading your engine's lubrication system with the V-Twin 12-1477 Oil Pump Bypass Kit offers several benefits. First and foremost, it ensures that your engine receives an adequate oil supply, even during heavy loads or high-RPM operation. This not only helps to reduce engine wear but also improves overall performance and longevity.

Additionally, this bypass kit can help prevent oil starvation issues, which can be detrimental to your engine. By maintaining consistent oil pressure throughout the engine, you can help protect against premature wear, engine damage, and potentially costly repairs.

Investing in the V-Twin 12-1477 Oil Pump Bypass Kit is an excellent way to enhance the performance and reliability of your V-twin engine. It is a worthwhile addition for any Harley-Davidson enthusiast looking to take their bike to the next level.

A V-twin motorcycle oil pump bypass kit is a modification that allows oil to bypass the engine's oil pump and flow directly to the engine's crankshaft. This modification can provide several benefits, but it also comes with some drawbacks.

1. Improved oil pressure: Bypassing the oil pump allows for a more consistent oil pressure, which can help ensure proper lubrication of the engine. This is particularly important during cold starts when oil pressure can be low.

2. Increased oil flow: A bypass kit can also provide increased oil flow to the engine, which can lead to improved cooling and better engine performance.

3. Improved engine durability: By ensuring that the engine always has an adequate supply of oil, a bypass kit can help improve engine durability and reduce the risk of engine damage.

1. Complexity: Installing a bypass kit can be a complex process that requires some mechanical knowledge and experience. It may also require additional parts, such as an external oil pump or an oil cooler.

2. Cost: A bypass kit can be a costly modification, particularly if additional parts are required. The cost can vary depending on the specific make and model of the motorcycle and the components used.

3. Maintenance: A bypass kit requires some additional maintenance compared to a standard oil pump. For example, the external oil pump may need to be serviced or replaced periodically.

A V-twin motorcycle oil pump bypass kit can provide several benefits, including improved oil pressure, increased oil flow, and improved engine durability. However, it also comes with some drawbacks, such as complexity, cost, and additional maintenance requirements. Ultimately, whether or not to install a bypass kit depends on your individual needs and preferences, as well as your mechanical abilities and budget. If you are comfortable with the complexity and cost, and you value the potential benefits, then a bypass kit may be a worthwhile modification for your V-twin motorcycle.

Details:

V-Twin Manufacturing Oil Pump Bypass Kit: Part #: 1404708. Manufacturer Part #: 12-1477. Overview of V-Twin Manufacturing Oil Pump Bypass Kit: pump bypass kit includes spring, plug and valve. Type Oil Pump Bypass Valve.

This item fits the following machines:: , Harley-Davidson, 1937-1940EL, 1941-1953FL, 1949-1953Hydra Glide - FL.

part #: 121477 prices

• $40.73-$56.99

specifications filtertake:

• brand: V-twin Manufacturing
• mpn: 12-1477
• country of origin: Taiwan
• item height: 0.50
• item length: 3.25
• item weight: 0.05
• item width: 3.00
• type: Oil Pump Bypass Valve

general filtertake:

• condition: New
• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Oil Filters

seller filtertake:

• # reviews: 110752
• rating: 99.8%
• city: Rush City, Minnesota

returns filtertake:

• policy: Returns Accepted
• paid by: Seller
• time: 60 Days

shipping filtertake:

• type: Fixed
• transit: 2-4 Days
• class: Standard
• cost: $7.99
• service: Standard

payments filtertake:

• credit card: Discover
• wallet: Apple-pay
• other

offer filtertake:

• quantity: 1
• sold: 0
• options: Ship-to-home
• started: April 9, 2026
• availability: In Stock

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