Euplokeer 15.3in Gas Strut Pair for Truck Topper & Camper Shells 21577-002 OEM-fit, Easy Install

Euplokeer 15.3in gas strut (model 21577-002) is a pair of replacement lift supports designed to hold and assist opening the rear window or hatch of compatible LEER/ARE/SnugTop truck toppers and camper shells.

If your truck topper rear window, camper shell hatch, or pickup toolbox lid no longer stays open or moves stiffly, these 15.3-inch gas shocks offer a straightforward OEM-style replacement. Each order includes two struts with the same extended length and interchange number (21577002 / 21577-002), supplied pre-assembled and ready for a quick swap using only a flat-head screwdriver. Euplokeer emphasizes checking your original part numbers and measurements before ordering to ensure a correct fit.

How do I confirm these gas struts will fit my topper or shell?

Matching the right gas strut is about three details: the OEM/interchange number, the extended length, and the required force (pound rating). Confirming these on your old cylinder prevents ordering the wrong size or strength.

• Compare the OE/interchange number to 21577002 or 21577-002.
• Measure the old strut fully extended; this replacement is 15.3 inches extended.
• Check the pound force stamped on your original cylinder to match lifting capacity.

What tools and steps are needed to install these replacement lift supports?

Installation is intentionally simple and requires minimal tools — most users can complete the swap in minutes. The package includes two assembled gas shocks that mount with standard retainer clips on ball-stud fittings.

• Tools: flat-head screwdriver to pry off retaining clips or press in snap connectors.
• Steps: prop the hatch open, remove old clips, pull old strut off ball studs, push new strut onto studs until it snaps.
• Tip: have a helper hold the hatch to keep it stable while you install each strut.

Which vehicles and applications are these gas shocks suitable for?

These struts are intended for specific truck toppers and related applications rather than universal use. They are commonly used on LEER, ARE, and SnugTop camper shell rear windows and similar pickup lids where the OEM interchange number matches.

• Compatible with LEER and certain ARE/SnugTop models that use 21577002 or 21577-002.
• Useful for rear topper windows, camper hatch lids, and pickup toolboxes with matching specs.
• Not universal — always match part numbers and measurements before purchasing.

How do I choose the correct gas strut if I don’t have the OEM number?

If the original part number is unavailable, you can still find the right replacement by measuring and checking performance requirements. Measure the fully extended length and compare to the 15.3-inch specification, and note how easily the hatch opens to estimate needed force.

• Measure from center of ball stud to center of ball stud with strut fully extended.
• Estimate required lift force by testing how easily the hatch opens—replace with similar or slightly higher pound rating if uncertain.
• Contact Euplokeer customer service for guidance and confirmation if needed.

Who this is for: the Euplokeer 15.3in gas strut set is for truck owners, installers, and DIYers replacing aging or failed lift supports on LEER/ARE/SnugTop camper shells, pickup topper rear windows, and compatible toolbox lids who need an OEM-style interchange (21577002 / 21577-002) and a quick, tool-light installation. If you want a like-for-like replacement, easy fitment with common hardware, and short-term support from the brand, these gas shocks are a practical choice. Euplokeer offers 24-hour email response and a 15-month exchange policy to assist with fitment questions or post-purchase concerns.