Twin Power Twin Cam and M8 Black Oil Filter With Nut Replaces H-D 63798-99 with Backflow Valve

Name: Twin Power Twin Cam and M8 Black Oil Filter With Nut Replaces H-D 63798-99 with Backflow Valve - Wyld Performance
SKU: twp603615
Price: 10.99 USD
Availability: OutOfStock
Rating: 5.00 (2 reviews)

SKU: twp603615

Rated 5.00 out of 5 based on 2 customer ratings

(2 customer reviews)

$10.99

Out of stock

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Category: Oil Filters

Twin Power Twin Cam M8 Black Oil Filter With Nut for Reliable Engine Protection

The Twin Power Twin Cam M8 Black Oil Filter With Nut is built for riders who want dependable filtration and easy installation on Harley-Davidson Twin Cam and Milwaukee-Eight engines. This oil filter replaces H-D part number 63798-99 and includes a backflow valve to help maintain oil pressure when the engine is off. The black finish blends well with most Harley builds while the hex nut on the end allows quick removal during routine service.If you maintain your own bike or want a reliable replacement filter, this model keeps oil cleaner and makes service time easier.

Product Specifications

The design of the Twin Power Twin Cam M8 Black Oil Filter With Nut focuses on durability and practical service features.

Product Type: Spin-on oil filter
SKU: twp603615
Replacement For: Harley-Davidson 63798-99
Engine Compatibility: Twin Cam and Milwaukee-Eight (M8) engines
Finish: Black
Top Design: Built-in hex nut for easier removal
Internal Valve: Backflow / anti-drainback valve
Category: Oils & Oil Filters
Application: Engine oil filtration for Harley-Davidson motorcycles

These specifications ensure the filter provides proper oil flow, filtration, and compatibility with common Harley engine setups.

Product Features and Real Rider Benefits

Built-In Hex Nut for Easy Removal

Anyone who has changed oil on a tight Harley frame knows how difficult it can be to remove a stubborn filter. The built-in hex nut solves that problem.Benefit: A socket or wrench can remove the filter quickly without crushing the housing.

Anti-Drainback Backflow Valve

The internal backflow valve prevents oil from draining out of the filter when the engine is off.Benefit: Oil pressure builds faster during startup, which helps reduce dry starts and engine wear.

Strong Metal Housing

The filter body is built with durable materials that resist pressure and heat from normal riding conditions.Benefit: Reliable filtration even during long highway rides or hot weather riding.

Clean Black Finish

The black finish matches most Harley engines and custom builds.Benefit: A simple service part that still keeps the engine area looking clean.

Fitment Clarity

The Twin Power Twin Cam M8 Black Oil Filter With Nut is designed to replace Harley-Davidson oil filter 63798-99.It is commonly used on:

Twin Cam engines
Milwaukee-Eight (M8) engines

Always verify the original filter number used on your motorcycle before installation to ensure compatibility.

Installation Insight

Installing the Twin Power Twin Cam M8 Black Oil Filter With Nut follows the same process as a standard Harley oil filter replacement.Basic service steps include:

Remove the old oil filter.
Lightly oil the rubber gasket on the new filter.
Thread the filter by hand until the gasket contacts the surface.
Tighten according to manufacturer guidelines.

The hex nut on top makes removal during the next service much easier, especially on bikes with limited access around the filter area.

Who This Oil Filter Is For

This oil filter is a strong choice for:

Riders performing routine oil changes at home
Harley owners with Twin Cam or Milwaukee-Eight engines
Builders who want a clean black filter that matches the engine
Mechanics who prefer filters with easy removal features

The system provides valuable assistance to bike owners who perform regular maintenance on their bicycles because it offers replacement components which reduce their maintenance efforts.

Frequently Asked Questions

What motorcycles use this oil filter?

The product operates as a replacement filter for Harley-Davidson motorcycles which feature Twin Cam and Milwaukee-Eight engines and require filter change number 63798-99.

What is the purpose of the hex nut on the filter?

The hex nut allows easy removal with a wrench or socket during oil changes.

What does the backflow valve do?

The anti-drainback valve keeps oil inside the filter when the engine is off, helping maintain faster oil pressure at startup.

Is this filter reusable?

No. Like most spin-on oil filters, it should be replaced during each oil change.

Does the black finish affect performance?

No. The finish is cosmetic and helps match the engine's appearance.

Is this a direct replacement for Harley filter 63798-99?

Yes. It is designed as a replacement for that part number.The Twin Power Twin Cam M8 Black Oil Filter With Nut functions as an intelligent enhancement which Harley owners should select to achieve both effective filtration and simplified maintenance procedures. The unit includes a removal nut which prevents backflow during drainage and works with both Twin Cam and Milwaukee-Eight engines to provide reliable performance during every bike maintenance session.

2 reviews for Twin Power Twin Cam and M8 Black Oil Filter With Nut Replaces H-D 63798-99 with Backflow Valve

Rated 5 out of 5
David O’Neil – April 29, 2026
Quality black filter with the backflow valve included. Looks great and works better than stock.
Rated 5 out of 5
Fradaj – May 13, 2026
Great blacked-out filter for my M8. The nut-style removal makes changes easy and the backflow is perfect.

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Twin Power Twin Cam and M8 Black Oil Filter With Nut Replaces H-D 63798-99 with Backflow Valve