Skip to content
Troubleshooting Returns Warranty
Hydrastar 8K Axles, 8 Lug Integral Tandem Axle Trailer Disc Brake Kit (5/8") - Dexter Axle / Lippert

Hydrastar® 8K Axles, 8 Lug Integral Tandem Axle Trailer Disc Brake Kit (5/8") {E8K-T5} - Dexter Axle / Lippert

SKU #E8K-T5
by Hydrastar
Save 5% Save 5%
$2,559.00
$2,559.00 - $2,559.00
$2,559.00
$2,421.00
$2,421.00 - $2,421.00
$2,421.00

Complete tandem axle disc brake conversion kit for 8K axles with 8-lug hubs. Includes the Hydrastar EOH actuator, disc brake assemblies, brake lines, and all hardware needed for a full conversion.

Limited Warranty Included
2 YEAREOH Actuator
3 YEARDisc Brakes
LIFETIMEBrake Lines
8K
Axle Rating
TANDEM
Axle
DISC
Brakes
DOT
Compliant
What You Get

In The Box & Sold Separately

Included
✓
(1) 381-7067 — Hydrastar® Electric Over Hydraulic (EOH) Trailer-Mounted Brake Actuator (1600 PSI)
✓
(2) E303-8K5-ADL — Hydrastar® 7K/8K Rated, Dacromet Coated Integral Single Axle Brake Kit (5/8 in. )
✓
(2) 303-E78C — 7K/8K Axle Rated Dacromet Coated Integral
✓
(2) 303-8BDI — 7K Axle Rated Dacromet Coated Bracket - {DEXTER / LIPPERT "4 HOLE BRAKE FLANGE"}
✓
(1) 496-252 — Hydrastar® Hydraulic Tandem Axle Brake Line Kit – 25 ft., 3/16 in., 3000psi hydraulic brake pressure The Hydrastar® Brak
✓
(4) 02475 — Hydrastar® 7K/8K Rated Outer Bearing (5/8 in., 9/16 in.)
Sold Separately
–
DOT 3 or DOT 4 Brake Fluid
–
Tools for installation
–
Hubs & Drums (use existing)
Questions about fitment?

Feel free to reach out to us or start a live chat in the bottom right corner for assistance.

Common Questions

Before You Buy

What PSI actuator is included?+
The 1,600 PSI GEN 8 actuator is included. This is the correct pressure for both disc and drum brake applications.
Do I need anything else to complete the install?+
You will need DOT 3 brake fluid (not included). Basic hand tools and a way to mount the actuator to your trailer tongue.
What is the difference between integral and slip over?+
Integral kits replace your entire hub and rotor as one piece. Slip over kits mount the rotor over your existing hub — faster install, no hub removal needed.
2024–2026 GM Truck & SUV Owners

Dashboard showing “Service Trailer Brakes”? Brakes disabled?

Affects Silverado, Sierra, Tahoe, Suburban, Yukon, Escalade, Colorado, Canyon & Hummer EV with integrated trailer brake controller.

That’s a known GM compatibility issue across the 2024–2026 lineup. Hydrastar has the fix — the GM Diode Module (#381-7074) is a plug-and-play inline solution.

New Ford Truck Owners

Connectivity issues before or after the dealer flash? Brakes dropping in and out?

Affects new Ford trucks when switching from electric mode to EOH mode.

Our Hydrastar Controller Adapter Module (#381-7073) has been very successful resolving this for Ford owners. Note: this is not a Hydrastar issue — just a Hydrastar part that helps.

Need Help Choosing?
Our team has helped thousands of trailer owners find the right setup.
Fastest response? Use the chat bubble in the bottom-right corner ↘
or call (812) 655-4544 · Mon–Fri, 8am–4:30pm ET