- Is 170 lb the right rating for my door?
- Match it to the door's weight and the original spring rating. A 170 lb pair suits many single-car doors; a heavier or double-car door needs a higher rating. Check the door's label or weigh the door before ordering.
- Do I need safety cables with extension springs?
- Yes. Extension springs should run through safety cables so a broken spring stays contained. Cables are usually sold separately and are worth adding to the order.
- Can I replace just one spring?
- Replace both at once. Springs on the same door wear at the same rate, and a new spring paired with an old one leaves the door unbalanced.
- Is this a torsion spring?
- No. These are extension springs that stretch along the horizontal tracks. Torsion springs mount on a shaft above the door and are a different part.
- Is $44.75 a good price for the pair?
- It is a low price for a matched two-pack, and only two stores list it new as of November 7, 2026. Compare against the cost of a professional spring replacement, which includes labor.
- Can I install these myself?
- It is possible but risky. Extension springs are under heavy tension, and a slip can cause serious injury. Many owners hire a garage door technician for the swap.
- Where is the Dura-Lift 170 lb heavy duty extension garage door spring 2-pack replacement springs cheapest?
- At The Home Depot, for $44.75, as of our latest check.
- Where can I buy the Dura-Lift 170 lb heavy duty extension garage door spring 2-pack replacement springs?
- 2 stores we checked sell it, including The Home Depot, Lowe's.
