// THE FULL RUNDOWN

If you're tired of dealing with the stock vacuum-actuated axle engagement on your Jeep, the 4x4 Posi-Lok is a solid upgrade that puts you back in the driver's seat — literally. This system fits Jeep Wrangler YJs with lift heights between 0" and 3", so whether you're cruising on pavement or tackling some serious off-road trails, you can count on it to deliver. No more waiting for the vacuum to do its thing; you get to engage the 4WD right from your cab.Here's how it works: once you've e

// WILL IT FIT? THE STRAIGHT ANSWER

Jeep Wrangler YJ

Manufacturer lists this part for the application above. Not 100% sure it fits your rig? Hit our Fitment Help page or ask our Jeep techs — we answer fast and we answer straight.

JAP FITMENT PROMISE // If we confirm fitment for your rig and it doesn't fit, return shipping is on us. No restocking fee. That's the deal.

// GETTING IT TO YOUR GARAGE

FREE SHIPPING OVER $199

Lower 48 states. Orders under $199 ship at calculated carrier rates shown at checkout.

1-2 DAY HANDLING

Most in-stock parts leave the warehouse within 1-2 business days. Built-to-order parts show extended lead times.

FREIGHT FOR THE BIG STUFF

Bumpers, axles and full kits may ship LTL freight. Inspect before signing — note any damage on the delivery receipt.

30-DAY RETURNS

Unused, uninstalled parts in original packaging within 30 days. RMA required — start with a quick message.

FULL SHIPPING & RETURNS POLICY

// PAY YOUR WAY

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FITMENT	Jeep Wrangler YJ
BRAND	JKS Manufacturing — shop all JKS Manufacturing parts →
PART #	PSL900
SKU	PSL900
CATEGORY	Driveline > Accessories
AVAILABILITY	IN STOCK
RETURNS	30-day return window

JKS Manufacturing 4x4 Posi-Lok Positive Axle Engagement System for Jeep Wrangler YJ 1987-1995

// THE FULL RUNDOWN

// WILL IT FIT? THE STRAIGHT ANSWER

// GETTING IT TO YOUR GARAGE

// PAY YOUR WAY

// TRAIL REVIEWS

JKS Manufacturing 4x4 Posi-Lok Positive Axle Engagement System for Jeep Wrangler YJ 1987-1995

// THE FULL RUNDOWN

// WILL IT FIT? THE STRAIGHT ANSWER

// GETTING IT TO YOUR GARAGE

// PAY YOUR WAY

MORE JEEP DRIVETRAIN & AXLES

// TRAIL REVIEWS