Kenmore Dishwasher Upper Rack Adjuster Kit 66512783K310 – What Part Fixes This Problem?
Need the replacement part? Search your model number at for guaranteed fit and fast free shipping.
Understanding the Problem
What this part is and why it matters: The 66512783K310 is an upper rack adjuster kit for Kenmore (Whirlpool-platform) dishwashers. It contains the plastic adjuster housings/clips (and sometimes pins) that attach the upper rack ends to the slide rails and allow you to raise or lower the rack. When this adjuster fails the rack can sag, fall out of height position, bind on the rails, or slide off. Step-by-step diagnosis and repair: 1) Confirm the symptom: Pull the upper rack fully out and try to change the rack height. If one or both sides drop, feel loose, or you hear cracking, the adjuster housing or its pin/clip is likely broken. 2) Tools and time: You’ll typically need a Phillips screwdriver, flat screwdriver or small pick, work gloves, and possibly needle-nose pliers. Allow 20–45 minutes. 3) Remove the upper rack: Pull the rack out to the stop. Locate the rail stops or release tabs at each end of the rack tracks. Depress the release (on most models lift the small plastic tab or press the release lever) and lift the rack off the rails, then slide it forward to remove. 4) Inspect the adjuster: With the rack off, examine the adjuster housings where the rails meet the rack ends. Look for cracked plastic, missing teeth, broken pins, or a detached wheel/roller. Also check the rail end and roller for wear. 5) Determine parts needed: If the housing or clip is cracked or the adjuster won’t hold height, you need the adjuster kit (66512783K310). If only the wheel/roller is worn, you can replace just the roller (model-specific part). 6) Remove the old adjuster: Depending on the model, the adjuster may snap off or be retained by a small screw/pin. Pry out the retainer or remove the screw and slide the adjuster off the rack end. Keep any small pins so you can reuse them if undamaged, but replace if included in the kit. 7) Install the new adjuster kit: Align the new adjuster housing with the rack end and rail slot and press it into place until it snaps. If the kit includes pins or clips, install them per the kit directions. Confirm the adjuster moves between height positions smoothly and locks in place. 8) Reinstall the rack: Place the rack back on the rails, slide it in fully and test both height positions several times while loading and unloading to confirm stability. 9) Final checks: Make sure the rack glides smoothly on both sides and stays at the selected height. If the rack still sags, inspect the opposite side or the rail itself for damage. Safety note: Always disconnect power to the dishwasher at the circuit breaker before doing repairs if you need to move the dishwasher or access electrical components. For the adjuster swap you usually don’t need to disconnect plumbing or power, but take care to avoid sharp edges inside the appliance.
Common Symptoms
Upper rack will not hold height or stays tilted; rack drops when pulled out; rack binding or coming off the rails; rattling or clunking at the rack ends.
Common Causes
- Cracked or broken plastic adjuster housing/clips
- Worn or missing roller/wheel or retaining pin
- Broken internal latch or teeth in the adjuster that prevent locking
- Damaged rack end or rail that prevents proper seating
Popular Parts That Fix This Problem
These are the most common replacement parts that fix this problem. When you're ready to order, click below to find the right part at ProsourceParts.com — just search by your appliance model number for a guaranteed fit.
Helpful Repair Tip
Remove the rack and manually move the adjuster through its positions — if the housing flexes, locks intermittently, or you see missing teeth/cracks, replace the entire adjuster kit rather than just the wheel.
Frequently Asked Questions
Do I need the full adjuster kit or can I just replace the wheel?
If the plastic housing is cracked or the adjuster won’t hold height, replace the full adjuster kit (66512783K310). If the housing is intact but the roller is worn or seized, you can replace only the wheel/roller — but confirm the roller part number for your exact model before ordering.
How do I know if this part fits my Kenmore dishwasher?
Check the dishwasher model number on the sticker (usually on the door frame or side of the tub) and compare it to the part’s compatibility list from the supplier. Many Kenmore dishwashers share parts with Whirlpool/Maytag models; if in doubt, search the part number plus your model number or consult the parts diagram for your model.
Related How-To Videos
Real DIY Repair Stories
Be the first to share your repair story!
Share Your Repair Story
Your experience helps other homeowners fix their appliances. Tell us how it went!
Can't Fix It Yourself? Find a Local Technician
It's perfectly okay to call a professional. Some repairs require specialized tools, deep teardowns, or dealing with complex systems that are better left to the pros.
Find the Right Part for Your Appliance
Don't guess — search your exact appliance model number at ProsourceParts.com to find the correct OEM compatible replacement part. They offer fast free shipping, guaranteed fit, and thousands of parts in stock.
Your Free Parts Videos
Whether your dishwasher won't drain, your dryer stopped heating, or your fridge isn't cold, we've created simple repair guides for the most common appliance problems homeowners face. Each guide explains what's going wrong, the most likely causes, and which replacement parts fix the issue. When you're ready to order, we link directly to ProsourceParts.com where you can search by model number and get the right part shipped fast.