1981-1993 Dodge D350 Door Lock Kit and Latch Guide
Address common lock failures in your first-generation Dodge Ram and restore your truck's security.
- The most common failure is not the lock cylinder, but a small plastic part inside the main door latch mechanism.
- New OEM parts are generally unavailable; your main choices are new aftermarket kits from brands like Standard Ignition or used OEM parts.
- While replacing the lock cylinder, always inspect and lubricate the entire latch and linkage system inside the door.
- A new door lock kit will come with a new set of keys, which will not match your ignition key.
Signs of a Failing Door Lock
The door lock system on the first-generation Dodge D350 is durable but can wear out over time. Symptoms often start small and get worse. Being unable to lock or unlock your doors is both an inconvenience and a security risk.
| Symptom | Why It Happens |
|---|---|
| Key is hard to turn or won't turn | The tumblers inside the lock cylinder are worn, or the cylinder is full of dirt and grime. |
| Door won't unlock with the key | The connection rod may have slipped off, or a plastic component inside the main door latch has broken, causing a jam. |
| Lock button is stuck or won't move properly | This is a classic sign of a broken internal latch mechanism. Often, a small plastic piece fails, which prevents the lock from moving freely. |
| Door gets stuck closed | If the latch mechanism fails, it can get stuck in the locked position, trapping you in or locking you out, even if the lock button moves. |
Choosing an Aftermarket Door Lock Kit
For a vintage truck like the 1981-1993 D350, finding new original equipment (OEM) parts from Mopar is nearly impossible. The market primarily consists of new aftermarket parts and used parts from salvage yards.
Brand Spotlight: Standard Ignition (Standard Motor Products)
Standard Ignition is a well-regarded aftermarket manufacturer known for producing quality replacement parts that often aim to fix the original part's weak points. Their door lock kits for the D350 are made with durable materials like die-cast zinc and brass tumblers, designed to match the original for a precise fit. For a reliable, brand-new part that restores original function, Standard is a trusted choice among professional technicians.
Pro Tip: Check the Latch and Striker
Often, a bad lock cylinder is accompanied by a worn-out door latch or a misaligned door striker. A common failure is a broken plastic piece inside the latch assembly. While you have the door panel off to replace the lock cylinder, it's the perfect time to inspect, clean, and lubricate the entire latch mechanism. If the door doesn't close tightly, consider replacing the door striker bolt as well.
Aftermarket Door Lock Kit Cost for 1981-1993 Dodge D350
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket Door Lock Kit (Standard Ignition) | $22 - $46 |
| Used OEM (Salvage Yard) | $15 - $50 (Varies by condition and availability) |
| Shop Labor for Installation | $75 - $150 |
Frequently Asked Questions
Will a new door lock kit use my old key?
No. A new aftermarket door lock kit will come with its own set of keys. This means your new door keys will be different from your ignition key. Some locksmiths may be able to re-key the new cylinder to match your old key, but this is not always possible.
Is it the lock cylinder or the latch that's broken?
If the key feels gritty or won't turn, the cylinder is likely the problem. If the key turns but nothing happens, or the interior lock button is stuck, the problem is more likely inside the door with the latch mechanism or the connecting rods. Many owners find a broken plastic piece on the latch assembly is the true cause of their lock problems.
My truck has power locks. Is the problem electrical?
It could be, but the mechanical parts are a common point of failure even on power-equipped models. If you don't hear the actuator trying to work (a clicking or buzzing sound), check the fuse and switch first. If the actuator makes noise but the door doesn't lock or unlock, the problem is likely mechanical with worn plastic clips or a faulty latch.
Can I just lubricate the lock instead of replacing it?
Sometimes, yes. If the lock is just stiff from dirt and age, spraying a penetrating lubricant into the keyhole and working the key back and forth can free it up. However, this will not fix a lock with broken internal tumblers or a failed latch mechanism.
Technical Specifications
OEM Part Numbers: 4723484
Kit typically includes two door lock cylinders (left and right) and two matching keys. Available in chrome or black finishes.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Dodge D350: