Harley-Davidson Milwaukee-Eight Gloss Black Upper Rocker Box Cover 25700520

This engine cover is the perfect start in converting your powertrain to an elegant “tuxedo black” look.

• Gloss black

• Manufactured from Original Equipment components to ensure a perfect fit

• Coated with temperature-resistant paint to ensure a long-lasting finish

• Critical surfaces are masked to provide good gasket seal

• Complete the look with a matching Primary Cover, Cam Cover, and Trasmission Side and Top Covers (sold seperately)

Fits ’18-later Softail® and ’17-later Touring and Trike models. (2 required – Listing is for 1) Harley-Davidson Milwaukee-Eight Gloss Black Upper Rocker Box Cover 25700520

Harley-Davidson Milwaukee-Eight Gloss Black Upper Rocker Box Cover 25700520

The Harley‑Davidson Milwaukee‑Eight Gloss Black Upper Rocker Box Cover (Part # 25700520) is a genuine engine trim accessory designed to elevate the styling of Harley‑Davidson motorcycles equipped with the Milwaukee‑Eight® powertrain. This cover is perfectly suited for riders seeking to personalize and enhance the visual appeal of their bike’s engine area with a sleek, coordinated “tuxedo black” look — a popular dark‑trim aesthetic among modern Harley‑Davidson enthusiasts. (Harley-Davidson) Harley-Davidson Milwaukee-Eight Gloss Black Upper Rocker Box Cover 25700520

Premium OEM Quality & Finish
This upper rocker box cover is manufactured from Original Equipment components, ensuring a precise fit and seamless integration with the motorcycle’s existing engine architecture. With its gloss black finish, the cover introduces a polished yet understated style that blends beautifully with other gloss black engine and chassis trim pieces. (Harley-Davidson) Harley-Davidson Milwaukee-Eight Gloss Black Upper Rocker Box Cover 25700520

The part is coated with temperature‑resistant paint, helping the finish endure the heat cycles and environmental exposure typical of engine operation. This robust finish not only enhances the bike’s appearance but also delivers long‑lasting durability, resisting fading and wear over time. (Harley-Davidson) Harley-Davidson Milwaukee-Eight Gloss Black Upper Rocker Box Cover 25700520

Design & Sealing
Harley‑Davidson pays careful attention to functional details: critical sealing surfaces are masked during the manufacturing process. This ensures that the gasket makes proper contact with the engine surface, maintaining a reliable oil seal and reducing the risk of leaks when the cover is installed. (Harley-Davidson) Harley-Davidson Milwaukee-Eight Gloss Black Upper Rocker Box Cover 25700520

Part of a Coordinated Trim Set
This upper rocker box cover serves as an excellent starting point for riders who want to build out a coordinated dark‑trim theme on their motorcycle. It pairs seamlessly with other gloss black engine covers — such as matching Primary Covers, Cam Covers, and Transmission Side and Top Covers — all sold separately. Combining multiple trim pieces from the same finish family creates a unified, high‑contrast look that enhances the bike’s overall aesthetic appeal. (Harley-Davidson) Harley-Davidson Milwaukee-Eight Gloss Black Upper Rocker Box Cover 25700520

Fitment & Compatibility
Part # 25700520 is engineered to fit a broad range of Harley‑Davidson models equipped with the Milwaukee‑Eight® engine:

• ’18‑later Softail® models
• ’17‑later Touring and Trike models (with some exceptions such as the ’25‑later FLTRXRRSE).
  Installation typically requires two covers (one for each side of the engine) to achieve a complete look. (Harley-Davidson) Harley-Davidson Milwaukee-Eight Gloss Black Upper Rocker Box Cover 25700520

Installation Notes
Because this is a genuine engine cover — replacing a stock component — riders should be aware that removing and installing engine covers may require new gaskets to ensure proper sealing and prevent oil leaks. A Harley‑Davidson dealer or service manual can provide guidance on the correct gasket part numbers and torque specifications for installation. (Harley-Davidson) Harley-Davidson Milwaukee-Eight Gloss Black Upper Rocker Box Cover 25700520

Warranty & Packaging
Each upper rocker box cover is sold individually and includes a one‑year limited warranty when purchased through authorized Harley‑Davidson channels, adding a layer of confidence in its build quality and durability. (Harley-Davidson) Harley-Davidson Milwaukee-Eight Gloss Black Upper Rocker Box Cover 25700520

In summary, the Milwaukee‑Eight Gloss Black Upper Rocker Box Cover (25700520) is an OEM trim piece that delivers refined styling, durable finish, and seamless integration for riders who want to darken and enhance their engine’s appearance while maintaining professional‑grade fitment and quality. (Harley-Davidson) Harley-Davidson Milwaukee-Eight Gloss Black Upper Rocker Box Cover 25700520