How to Choose the Right Gastac Replacement for Your Attwood Gas Spring ?
If you are currently using Attwood gas spring, Attwood SpringLift, or Attwood gas shocks, and want a cost-effective replacement, Gastac offers a wide range of spray-painted gas springs that are fully compatible. Here's how to choose the right Gastac SL series gas spring for your application.
1. Identify Your Attwood Part Number
The simplest and most reliable way to select the correct Gastac replacement is to check the part number of your existing Attwood gas spring.
- Part numbers usually start with "SL" (e.g., SL10, SL15, SL36Z).
- You can find the part number printed on the gas spring body.
Tip: Even if your current gas spring is not an Attwood brand, the SL series part numbers are often standardized, and Gastac can provide a compatible replacement.
| Model | Extended Length (in.) | Stroke (in.) | Compressed Length (in.) | Related Keywords | Price$ | BUY NOW |
|---|---|---|---|---|---|---|
| SL10 | 10 | 3 | 7 | springlift sl 10 30 | 8$ | Buy Now |
| SL11 | 7.25 | 2 | 5.25 | attwood sl11 10 1 | 8$ | Buy Now |
| SL13 | 15 | 5.25 | 9.75 | springlift sl13 20 1 | 10$ | Buy Now |
| SL14 | 20 | 8 | 12 | springlift sl 14 60 | 10$ | Buy Now |
| SL15 | 12 | 3.5 | 8.5 | springlift sl 15 10 | 8$ | Buy Now |
| SL16 | 17.2 | 7 | 10.2 | springlift sl16 10 1 | 10$ | Buy Now |
| SL29 | 36.3 | 15.2 | 21.1 | attwood springlift sl29 gas springs | 16-18$ | Buy Now |
| SL30 | 10 | 3 | 7 | springlift sl 30 20 | 8$ | Buy Now |
| SL31 | 7.5 | 2.25 | 5.25 | springlift sl31 20 1 | 8$ | Buy Now |
| SL33 | 15 | 5.5 | 9.5 | springlift sl33 20 1 | 8$ | Buy Now |
| SL34 | 20 | 8 | 12 | springlift sl 34 20 | 8$ | Buy Now |
| SL35 | 12.04 | 3.58 | 8.46 | springlift sl 35 20 | 10$ | Buy Now |
| SL36 | 17.2 | 7.2 | 10 | springlift sl36 20 1 | 10$ | Buy Now |
2. Measure Your Existing Gas Spring
If you don't have the part number, you can select a Gastac replacement by measuring your current gas spring:
- Extended Length: Fully extend the gas spring and measure from center to center of the mounting points.
- Compressed Length: Fully compress the gas spring and measure the same distance.
- Stroke: This is the travel distance of the piston rod. Stroke = Extended Length - Compressed Length

3. Gastac High-Quality Stainless Steel Gas Springs
If you find the above gas springs not powerful enough, we recommend our 304/316 stainless steel gas springs. These springs are corrosion-resistant, premium-quality, and built to impress—you’ll be completely satisfied.
| Model | Extended Length (in.) | Stroke (in.) | Compressed Length (in.) | Related Keywords | Price$ | BUY NOW |
|---|---|---|---|---|---|---|
|
Springlift Sl 10 30 Boat Marine Gas Struts |
10 | 3 | 7 | springlift sl 10 30 | 20$ | Buy Now |
|
Springlift Sl11 10 1 Boat Marine Gas Struts |
7.25 | 2 | 5.25 | attwood sl11 10 1 | 20$ | Buy Now |
| SL13 | 15 | 5.25 | 9.75 | springlift sl13 20 1 | 10$ | Buy Now |
| SL14 | 20 | 8 | 12 | springlift sl 14 60 | 10$ | Buy Now |
| SL15 | 12 | 3.5 | 8.5 | springlift sl 15 10 | 8$ | Buy Now |
| SL16 | 17.2 | 7 | 10.2 | springlift sl16 10 1 | 10$ | Buy Now |
| SL29 | 36.3 | 15.2 | 21.1 | attwood springlift sl29 gas springs | 16-18$ | Buy Now |
| SL30 | 10 | 3 | 7 | springlift sl 30 20 | 8$ | Buy Now |
| SL31 | 7.5 | 2.25 | 5.25 | springlift sl31 20 1 | 8$ | Buy Now |
| SL33 | 15 | 5.5 | 9.5 | springlift sl33 20 1 | 8$ | Buy Now |
| SL34 | 20 | 8 | 12 | springlift sl 34 20 | 8$ | Buy Now |
| SL35 | 12.04 | 3.58 | 8.46 | springlift sl 35 20 | 10$ | Buy Now |
| SL36 | 17.2 | 7.2 | 10 | springlift sl36 20 1 | 10$ |
FAQ
Q: Are Gastac SL series gas springs compatible with Attwood SpringLift gas springs?
A: Yes, they are designed to directly replace Attwood SL10–SL36Z models.
Q: Can I use them in saltwater environments?
A: Yes, while spray-painted instead of stainless steel, they are coated for marine use and suitable for most boat applications.
Q: How do I select the right model?
A: Match your existing Attwood part number, or check the extended length, stroke, and compressed length in our table.
Ready to Save on Gas Springs?
If you are looking for reliable, cost-effective replacements for Attwood gas spring, Attwood gas shocks, or Attwood SpringLift gas springs, check out the Gastac SL series. Smooth operation, reliable lifting, and affordable pricing—all in one.
[Shop Gastac SL Series Now →]

