EQ Systems TJ Replacement Hydraulic Cylinder | Part 1218EQ | Bumper Pull Tongue Jack

Replace a leaking, pressure-losing, or non-holding cylinder in your EQ Systems TJ bumper-pull tongue jack with the EQ Systems TJ Replacement Cylinder (Part 1218EQ). The TJ is EQ Systems' bumper-pull jack — 6,000 lbs capacity, 16" stroke — and this is the working part inside; outer tube, mounting and foot stay on the trailer, only the cylinder gets swapped. Available at The RV Surplus.

Fitment critical: Verify parts against parts ID charts before ordering. Call EQ Systems at 800-846-9659.

⭐ TJ Bumper-Pull Tongue Jack Cylinder

• Fits the EQ Systems TJ tongue pull jack
• Jack capacity: 6,000 lbs
• Jack stroke: 16"
• Designed for bumper-pull applications
• Compatible with TJ jacks supplied with manual override as standard

⭐ When to Replace the Cylinder

The cylinder is the right part when the jack:

• Leaks fluid
• Will not hold a load
• Will not build pressure while the pump and valves test good

⭐ Check Your Fittings — NPTF vs SAE

Older EQ Systems cylinders were built with NPTF fittings; current production uses SAE. Quick check:

• SAE: no threads exposed between the cylinder body and the hex
• NPTF: threads exposed between the cylinder body and the hex

If your jack has NPTF fittings, call EQ Systems at 800-846-9659 before ordering so the correct fittings go out with the cylinder.

⭐ TJ Component History

Other TJ components have varied over production years. Verify your parts against the parts identification charts or call EQ Systems at 800-846-9659 before ordering additional replacements.

Documents

• EQ Systems Lifting Systems for Any Size Trailer (PDF)
• Hydraulic Cylinder Identification for Tube-in-Tube Jacks (PDF)
• Required Maintenance Items for EQ Hydraulic Jacks & Slide Systems (PDF)

Related TJ Jack

• Hydraulic Bumper Pull TJ Tongue Jack (8065M) — complete jack that uses this cylinder

Other Cylinders

• AJ 70 Cylinder (2505EQ) — AJ series gooseneck jack (3.5" tube, 8,000 lbs)
• AM 24 Cylinder (1179EQ) — AM series gooseneck jack (4" tube, 12,000 lbs)

90-Day Warranty

Backed by EQ Systems' 90-day replacement part warranty. Check documentation for full terms.

Specifications

• Brand: EQ Systems
• Model: TJ Replacement Cylinder
• SKU: 1218EQ
• Application: TJ bumper-pull tongue jack
• Jack Capacity: 6,000 lbs
• Jack Stroke: 16"
• Fittings: NPTF or SAE (verify before ordering)
• Warranty: 90-day replacement part warranty