BuleVina 3-Ton Floor Jack Low-Side Pump Plunger Kit — Dual Pump Replacement Set with Seals & Springs

BuleVina's replacement pump piston plunger kit restores sealing and lifting performance for 3-ton dual-pump floor jacks.

If your hydraulic floor jack has started to leak oil, feels spongy, or no longer holds load as it once did, worn pump plungers and cylinders on the low side are often the cause. This two-piece kit includes both the smaller and larger low-side pump plungers, cylinders, springs, C-rings, retainers and rubber seals needed to repair dual-pump 3-ton jacks. It’s made to match common aftermarket and OEM designs so you can bring your jack back to reliable operation without replacing the entire tool.

What exactly comes in this full low-side pump piston plunger set?

The kit supplies all the internal components required to rebuild the low side of a horizontal double-pump assembly. Parts are sized to replace both the smaller and larger plungers that a 3-ton dual-pump jack uses.

• Two machined pump plungers (smaller and bigger) with factory-fitted rubber sealing rings
• Two matching cylinders sized for each plunger
• Return springs, C-rings, and retainers for secure assembly
• Packaging contains two full sets to handle both plungers on the horizontal pump

How will these replacement parts improve my jack's performance?

Replacing worn plungers and cylinders restores the hydraulic seal and reduces internal leakage, which improves lift responsiveness and load-holding ability. Better seals mean less oil loss and more consistent pressure during use.

• Restores tightness between pump components to reduce seepage
• Improves lifting speed and reduces spongy handle feel
• Helps the jack maintain rated capacity by eliminating internal bypass
• Extends usable life of the jack without full replacement

Which jacks and models are compatible with this pump piston kit?

This kit is engineered for 3-ton hydraulic floor jacks that use a horizontal dual-pump arrangement. It is particularly compatible with many popular brands and aftermarket copies of the same pump design.

• Fits Torin Big Red style 3-ton dual-pump jacks
• Compatible with Harbor Freight / Pittsburg-like and Dayton-style models
• Works with Arcan and other 3-ton floor jacks that use similar low-side pump configurations
• Replaces both the smaller and bigger low-side plungers to cover common dual-pump setups

What are the exact sizes and material features of each plunger and cylinder?

The kit lists precise dimensions so you can confirm fit before installation. Components are made from corrosion-resistant, wear-resistant materials and include two rubber sealing rings on each plunger for improved longevity.

• Low-side smaller plunger: 2.88" long × 0.59" diameter (with seals); matching cylinder 2.64" × 1.06"
• Low-side bigger plunger: 2.88" long × 0.86" diameter (with seals); matching cylinder 2.59" × 1.19"
• High-quality metal construction with anti-corrosion finish on machined parts
• Includes springs, C-rings and retainers for secure, correct reassembly

Who is this kit for? If you own a 3-ton hydraulic floor jack that has become leaky, slow to lift, or can’t hold its rated load—particularly models from Torin (Big Red), Harbor Freight, Pittsburgh, Dayton, or Arcan—this BuleVina replacement pump plunger kit gives you the parts needed to rebuild the low side of the dual pump. It suits DIY mechanics, shop technicians and mobile service pros who prefer repair over replacement and want measured dimensions and quality materials for a reliable fix.