Indian Rear Master Cylinder 15.8Mm 1912864-463

Genuine Indian Rear Master Cylinder 15.8Mm — OEM Part #1912864-463

Brakes are the last part you want to compromise on. The genuine Indian Rear Master Cylinder 15.8Mm restores factory stopping power on your Indian motorcycle, matching the original fittings, dimensions and ABS components where equipped.

Calipers, master cylinders, lines, pads, rotors and ABS parts work as one hydraulic system. A worn or wrong part leads to a soft lever, noise or brake failure. This part is confirmed for 28 Indian models from 2018 to 2022.

Rear Master Cylinder 15.8Mm at a Glance

• OEM part number: 1912864-463
• Brand: Indian (genuine Polaris-made OEM part)
• Part type: Master Cylinder
• Indian fitment: Chief, Chieftain, Roadmaster, Springfield and Super Chief, 2018–2022
• Condition: New

Models and Years This Rear Master Cylinder 15.8Mm Fits

Genuine part #1912864-463 fits the models and years below. To be certain, match the part number to the factory parts diagram for your machine or contact us with your VIN before ordering.

Indian Motorcycle Fitment

Why Choose a Genuine Indian OEM Rear Master Cylinder 15.8Mm?

• Factory hydraulic specification and feel
• Direct fit with original calipers, lines and mounts
• Compatible with Indian ABS where equipped
• Restores safe, predictable stopping
• Sold by Witchdoctors, an Indian and Victory OEM parts specialist

Features and Materials

Key Features

• Genuine Indian OEM brake part, part #1912864-463
• Original fittings, banjo bolts and mounting
• Built to Indian's brake specification
• Designed for the listed Indian models
• Works with the DOT fluid in your manual

Materials and Construction

Indian brake parts use steel rotors, sintered or organic pads, aluminum calipers and master cylinders with DOT-compatible seals, and reinforced or braided brake lines.

Common Reasons Riders Replace This Part

• Fixing a soft or spongy lever or pedal
• Replacing leaking calipers, lines or master cylinders
• Replacing worn pads or warped rotors
• Repairing ABS wheel speed sensors and rings

Signs Your Rear Master Cylinder 15.8Mm Needs Replacing

• Spongy lever or pedal
• Squealing, grinding or pulsing
• Fluid leaks or dark fluid
• Rotors below minimum thickness
• ABS warning light

Installation Tips

1. Use the Indian parts diagram to confirm fittings and crush washers.
2. Protect paint from brake fluid and cap open lines.
3. Torque banjo bolts and caliper bolts to spec with new washers.
4. Refill with fresh DOT fluid and bleed fully (ABS models may need a specific procedure).
5. Test at low speed before riding normally.

Not sure whether to tackle it yourself? Read when to seek professional help or DIY before you start.

Parts Diagrams for Your Bike

Find part #1912864-463 and every part installed with it in the factory parts diagrams for your model:

• 2022 Indian Chieftain Dark Horse parts diagrams
• 2022 Indian Chieftain Elite parts diagrams
• 2022 Indian Chieftain Premium parts diagrams
• 2022 Indian Chieftain Standard 111 parts diagrams
• All Indian Motorcycle OEM parts diagrams

Related OEM Parts for the Same Bikes

Doing the job right? These genuine parts fit the same models and are often replaced at the same time:

• Indian ABS Mount Bracket (#1019445-329)
• Indian Switch-Brake Banjo M10X1.25 (#4014667)
• Indian Brake Caliper Bracket Upper (#5138531)
• Indian Brake Line / Hose, Front Master Cylinder To Module (#1913689)

Recommended Accessories and Maintenance Supplies

Pair your Rear Master Cylinder 15.8Mm with these parts and supplies:

• Brake pads and rotors — Pads and rotors
• Brake pads — Indian and Victory brake pads
• Brake and clutch levers — Levers
• Brake cleaner — Cleaners for brake service
• Indian Chieftain parts — more parts for your Chieftain
• Indian Chief parts — more parts for your Chief

Helpful Guides from the Witchdoctors Blog

• Find the Best Motorcycle Brake Pads
• Spring Tune-Up for Your Victory or Indian Motorcycle: Get Ready to Ride
• Victory & Indian Motorcycle Spring Inspection Checklist

Frequently Asked Questions

What is the OEM part number for this Indian Rear Master Cylinder 15.8Mm?

The genuine part number is 1912864-463. Use it to match this part to your factory parts diagram.

Which Indian motorcycles does part #1912864-463 fit?

It fits 28 Indian models (Chief, Chieftain, Roadmaster, Springfield and Super Chief) from 2018 to 2022. See the Indian fitment table above.

Is this a genuine OEM part?

Yes. This is a genuine Polaris-made OEM part, the same part number used at the factory for Indian models, not an aftermarket copy.

What brake fluid should I use?

Use the DOT type on the reservoir cap and in your manual. Never mix silicone DOT 5 with DOT 4.

Why is my ABS light on?

A failed wheel speed sensor is a common cause. Our blog covers diagnosis.

Do I need to bleed the brakes?

Yes, any time the hydraulic system is opened.

Order Your Genuine Indian Rear Master Cylinder 15.8Mm Today

Keep your Indian motorcycle on the road. Add the genuine Indian Rear Master Cylinder 15.8Mm (part #1912864-463) to your cart today, and order the related parts above at the same time so you can finish the job in one go.

• How long will it take to receive my order?
• Shipping and return policy
• Questions about fitment? Contact us
• Shop all Indian OEM parts

Where to Ride Your Indian

Put fresh parts to work on two of America's great motorcycle roads. Check road conditions, seasonal closures and park rules before you go.

• Highway 1 North Coast Byway — San Luis Obispo County, California: coastal miles from Hearst Castle toward Big Sur
• Skyline Drive — Shenandoah National Park, Virginia: 105 miles along the Blue Ridge crest