BuleVina Floor Jack Low-Side Pump Plunger Kit for 3-Ton Dual-Pump Jacks — Rebuild Set with Two Plungers, Seals & Springs

BuleVina’s low-side pump piston plunger kit replaces both the larger and smaller plungers on 3-ton dual-pump hydraulic floor jacks to stop leaks and restore lifting performance.

If your dual-pump floor jack (3-ton) has started to feel spongy, fails to hold pressure, or shows visible hydraulic fluid leakage, worn pump pistons and plungers are often the cause. This BuleVina kit supplies matched low-side components — two different plunger sizes plus cylinders, springs, C-rings and retainers — engineered to fit common brands like Torin Big Red, Harbor Freight, Daytona, Pittsburgh and Arcan so you can repair jacks rather than replace them.

How will replacing the low-side plungers affect jack performance?

Installing fresh pistons and seals restores the pump’s internal sealing surface and reduces bypass of hydraulic fluid, which improves lift responsiveness and helps the jack maintain pressure under load. The kit replaces both the smaller and bigger plungers on the low side so the dual pump works as intended.

• Stops internal hydraulic leaks that cause slow or inconsistent lifts.
• Restores proper load-bearing capacity and tighter pump action.
• Includes matched springs and retainers for reliable reassembly.

What exactly is included and what are the key dimensions?

The package contains two complete low-side pump plunger sets suitable for horizontal double-pump jacks: one set for the smaller plunger and one for the bigger plunger. Each part is sized to match common 3-ton dual-pump designs so installation is straightforward for most models listed in the compatibility note.

• Smaller plunger assembly: 2.88" x 0.59" (with seals); cylinder 2.64" x 1.06".
• Bigger plunger assembly: 2.88" x 0.86" (with seals); cylinder 2.59" x 1.19".
• Package: two full low-side sets including springs, C-rings, retainers and dual rubber sealing rings per plunger.

Which jacks will this BuleVina kit fit and how universal is it?

This kit targets 3-ton hydraulic floor jacks that use a horizontal dual-pump (low side) design. It’s sold as a universal repair solution and is commonly compatible with popular workshop brands, though fit should be confirmed against your jack’s dimensions and part layout before purchase.

• Designed for 3-ton dual-pump floor jacks (horizontal double pump).
• Listed compatibility: Torin Big Red, Harbor Freight, Daytona, Pittsburgh, Arcan.
• Replaces both the smaller and larger low-side plungers to restore balanced pump operation.

How durable are these replacement components and what materials are used?

BuleVina builds the plunger, cylinder, spring, C-ring and retainer from corrosion-resistant, wear-tolerant materials to withstand workshop environments. Dual rubber sealing rings on each plunger improve long-term sealing and reduce the need for repeat repairs.

• High-quality metals and corrosion-resistant finish for longevity.
• Two rubber seals per plunger for enhanced sealing performance.
• Components designed to resist wear from regular jack cycles and hydraulic fluid exposure.

Who is this for: This replacement kit is intended for DIY mechanics, professional technicians, and garage owners who use 3-ton dual-pump floor jacks and prefer repairing equipment to buying new units. If your jack shows reduced lift, leaks, or poor pressure retention and matches the listed dimensions or brand compatibility, this kit gives you the parts to refurbish the low-side pump and extend the jack’s service life.