Dorman M390259 Brake Master Cylinder vs 4LIFETIMELINES copper-nickel brake line tubing kit - 25 ft with 16 fittings
Overall winner: 4LIFETIMELINES copper-nickel brake line tubing kit - 25 ft with 16 fittings
Key Differences
4LIFETIMELINES (A) is a copper-nickel brake line tubing kit with 25 ft of true copper-nickel alloy tubing and 16 fittings, suited for brake line fabrication and repairs; Dorman (B) is a replacement brake master cylinder assembly with new EPDM rubber components and a precise replacement housing, intended to replace a specific pump unit. Choose A if you need tubing and fittings for custom or multiple brake line runs; choose B if you need a direct master cylinder replacement unit
Dorman M390259 Brake Master Cylinder
Brake master cylinder replacement with compatible housing and EPDM rubber components for brake fluid resistance. Includes user note that it installs in about 1–2 hours and fits well
Pros
- precise replacement housing
- EPDM rubber components
- new materials, not remanufactured
- meets SAE standards
Cons
- durability concerns reported by some customers
- leakage from front bottom seal reported
4LIFETIMELINES copper-nickel brake line tubing kit - 25 ft with 16 fittings
Copper-nickel brake line tubing kit, 25 ft with inverted flare SAE threads. Easy bending and flaring without special tools. Customers say it’s well-made and easy to work with, with good value for money
Pros
- true copper-nickel alloy tubing
- easy bending and flaring
- includes 16 fittings
- non-magnetic construction
Cons
- some parts reported missing
- inverted flare SAE threading may limit compatibility
Head-to-Head
| Criteria | Winner |
|---|---|
| Price | 4LIFETIMELINES |
| Durability | Tie |
| Versatility | 4LIFETIMELINES |
| User Reviews | 4LIFETIMELINES |