BMW Brake Fluid Reservoir / Tank 34336858915

OEM Part #: 34-33-6-858-915 (34336858915)

Brake Fluid Reservoir / Tank 34336858915 for BMW

Actual photo

The exact part you’ll receive — not a stock photo.

$58.99

Used

Donor Vehicle2014 BMW i3 · 0.6L

SKU: 572056 · 30-Day Returns

✓ Free Same Day Shipping on orders by noon CT

or pick up free in Waverly, MN ·

Hours & directions

Wolf Auto Parts, 127 6th St S, Waverly, MN 55390 · Mon–Thu 8–5, Fri 8–2 CT · 1-844-333-3609 · Directions · Ready immediately during business hours.

Only 2 in stock — no guaranteed restock

Brake Fluid Reservoir / Tank 34336858915 — Used (SKU 572056)

Genuine OEM Used SKU: 572056 Donor Vehicle: 2014 BMW i3 · 0.6L 3 photos

$58.99

30-Day Returns

Brake Fluid Reservoir / Tank 34336858915 — Used (SKU 612732)

Genuine OEM Used SKU: 612732 Donor Vehicle: 2014 BMW i3 · ELECTRIC · 59k miles 3 photos

$58.99

30-Day Returns

Genuine OEM — real photos
30-day returns on eligible parts
eBay Top Rated · 100,000+ positive ratings
Ships from our own indoor warehouse

This used OEM BMW Brake Fluid Reservoir / Tank, part number 6858915, comes from a BMW i3 or i3s donor vehicle. Also known simply as the brake fluid tank, it stores hydraulic fluid for the braking system. Common failure symptoms include cracks, leaks, or degraded plastic that can trigger low-fluid warnings. This reservoir is from models with either the 0.6L range-extender or pure battery EV drivetrain.

Specifications

Specifications for Brake Fluid Reservoir / Tank 34336858915
Fits Vehicle Model	i3, i3 REx, i3s, i3s REx
Fits Vehicle Make	BMW
OEM Part No	34-33-6-858-915 (34336858915)
Category	Master Cylinder

Compatible Vehicles

Fits 24 vehicle configurations across 1 make, 2014-2021.

Check your specific vehicle before ordering. This list shows year, make, and model. Some years have multiple trims or engines that use different parts, and individual listings may have additional fitment notes (e.g. “with sunroof only”). Review the full variant list below, or message us with your VIN and we’ll confirm the match.

BMW

i3 2014-2021 · 8 variants
i3 REx 2014-2021 · 8 variants
i3s 2018-2021 · 4 variants
i3s REx 2018-2021 · 4 variants

View all 24 vehicle configurations

Full vehicle fitment list for Brake Fluid Reservoir / Tank 34336858915
Year	Make	Model	Trim	Engine
2020	BMW	i3	Hatchback	Electric Vehicle
2021	BMW	i3	Hatchback	Electric Vehicle
2018	BMW	i3 REx	Hatchback	0.6L l2
2019	BMW	i3 REx	Hatchback	0.6L l2
2020	BMW	i3 REx	Hatchback	0.6L l2
2021	BMW	i3 REx	Hatchback	0.6L l2
2018	BMW	i3s	Hatchback	Electric Vehicle
2020	BMW	i3s	Hatchback	Electric Vehicle
2019	BMW	i3s	Hatchback	Electric Vehicle
2021	BMW	i3s	Hatchback	Electric Vehicle
2019	BMW	i3s REx	Hatchback	0.6L l2
2018	BMW	i3s REx	Hatchback	0.6L l2
2020	BMW	i3s REx	Hatchback	0.6L l2
2021	BMW	i3s REx	Hatchback	0.6L l2
2014	BMW	i3	Hatchback	Electric Vehicle
2015	BMW	i3	Hatchback	Electric Vehicle
2016	BMW	i3	Hatchback	Electric Vehicle
2014	BMW	i3 REx	Hatchback	0.6L l2
2016	BMW	i3 REx	Hatchback	0.6L l2
2015	BMW	i3 REx	Hatchback	0.6L l2
2017	BMW	i3	Hatchback	Electric Vehicle
2017	BMW	i3 REx	Hatchback	0.6L l2
2018	BMW	i3	Hatchback	Electric Vehicle
2019	BMW	i3	Hatchback	Electric Vehicle