Lippert 305340 Ground Control 3.0 Front Jack | 5,000 lb | Left or Right

Replace a worn or damaged front jack on your fifth-wheel's Lippert Ground Control 3.0 leveling system with the Lippert Ground Control 3.0 Hall Effect Front Jack (Part 305340) — a 5,000 lb-capacity electric leveling jack that works as either the left OR right front leg. Available at The RV Surplus.

⭐ Fits Either Side — Left or Right Front

This jack is configurable as either the left or right front leg on a Ground Control 3.0 system — one SKU covers both corners. Includes the motor, footpad, and mounting brackets for a complete leg replacement.

⭐ What "Hall Effect" Means

Ground Control 3.0 jacks use Hall Effect sensors instead of mechanical limit switches. The sensor reads the motor shaft's rotation magnetically, which lets the controller:

• Know exactly where the leg is in its stroke at all times
• Coordinate all legs together for true auto-level
• Detect stalls, over-current, and loss of position

Hall Effect jacks and older limit-switch jacks are not interchangeable. If your system runs Ground Control 3.0, order this part; older Ground Control (non-3.0) systems take different legs.

⚠️ Replace in Matched Pairs When Possible

Jacks on the same corner pair wear at similar rates. If one front jack has failed after years of service, consider replacing both fronts together — the "fresh" leg can over-work against a tired one and lead to premature failure.

⭐ Specifications at a Glance

⚠️ What's NOT Included — Order Separately

• Bolt-On Pull Pin (Lippert 119113)
• Snapper Pin (Lippert 225598)

Reuse yours if they're in good shape; replace them if worn.

⚠️ Before Calling It a Jack Failure

Jacks that won't run aren't always the leg's fault. Check:

• Battery voltage at the controller — Ground Control systems need real current; a weak battery presents as a bad jack
• Controller fault codes — the GC 3.0 controller indicates which leg has lost communication or stalled
• Wiring and connectors — corrosion at the motor plug is common on front jacks exposed to road spray
• Manual override — turn the drive shaft with the override wrench to confirm the jack body is free before condemning the motor
• See our RV Leveling System Troubleshooting Guide for a full walkthrough

⭐ OEM Cross-References

The same jack ships into coaches under several brand-specific part numbers:

• Grand Design: 160088
• Jayco: 0267855
• Keystone RV: 395034

If your dealer quoted one of these numbers, this is the same part.

What's Included

• (1) Lippert Ground Control 3.0 front jack with motor
• Footpad
• Mounting brackets

1-Year Warranty

Backed by Lippert's 1-year warranty. Check documentation for full terms.

Specifications

• Brand: Lippert
• Part Number: 305340
• System: Ground Control 3.0
• Position: Front — left OR right
• Sensor Type: Hall Effect
• Load Capacity: 5,000 lb
• Jack Stroke: 19-13/16"
• Inner Leg Extension: 17"
• Retracted Height: 38"
• Shape: Square tube
• Power: Electric (motor included)
• UPC: 848150057785
• OEM References: Grand Design 160088, Jayco 0267855, Keystone RV 395034
• Shipping Dimensions: 44" L × 10.5" W × 6.5" H, 45 lbs
• Country of Origin: China
• Warranty: 1 year