DORMAN OE SOLUTIONS SX-4021 Rear Right Door Lock Actuator Body Motor

( Brand: Dorman Oe Solutions ), ( Manufacturer Part Number: SX-4021 ), ( Type: Door Lock Actuator Motor ), ( Placement On Vehicle: Body Doors ), ( Manufacturer Warranty: 1 Year / 2 Years / 3 Years / 5 Years Depending On Part ), ( Ipn: C736 28-51 ), ( Compatible Year: 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 ), ( Core Charge: Free No Core Charge ), ( Position: Rear Right ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Dorman Door Lock Actuator Motor )

Review DORMAN OE SOLUTIONS Rear Right Door Lock Actuator Motor Oldsmobile Body fits 1977–1998

The **Dorman SX-4021 Rear Right Door Lock Actuator Motor** is a precision-engineered replacement component designed specifically for the **1977 1989 Oldsmobile 98** vehicles built on the **98-body platform**, ensuring seamless integration with the original vehicle s electrical and mechanical systems. This high-quality actuator motor is crafted to replicate the performance and durability of the factory unit, delivering smooth, reliable operation for both manual and power door locking functions. Built with robust internal components, including a durable motor windings, a reinforced gear assembly, and corrosion-resistant materials, the SX-4021 is engineered to withstand the demands of daily use while resisting wear from environmental exposure, moisture, and temperature fluctuations common challenges faced by older vehicles. The actuator features a **direct-fit design**, eliminating the need for modifications or additional adapters, making installation straightforward for mechanics and DIY enthusiasts alike. Whether replacing a failed motor due to electrical failure, mechanical wear, or rust-induced deterioration, this Dorman part guarantees a tight seal and precise engagement with the door lock mechanism, restoring full functionality to the rear right door. Backed by Dorman s reputation for quality and compatibility, this actuator motor is an ideal solution for restoring the reliability and convenience of power door locking in classic Oldsmobile models, ensuring years of trouble-free operation with minimal maintenance.

**Pros and Cons of buying a Dorman SX-4021 Rear Right Door Lock Actuator Motor for a 1977 1989 Oldsmobile 98 Body**

The Dorman SX-4021 is a well-regarded aftermarket part for several reasons. First, it is designed as a direct replacement for the original equipment actuator motor in your Oldsmobile 98, ensuring compatibility without the need for extensive modifications. This means you can install it without worrying about fitment issues or the need for additional adapters.

Second, Dorman is a trusted brand in the automotive aftermarket, known for producing high-quality, reliable components. Their parts are often backed by warranties, which can provide peace of mind, especially if the actuator fails prematurely. The SX-4021 is no exception, and many customers report long-term performance with this part.

Third, purchasing from a reputable supplier ensures that you receive a genuine Dorman product, reducing the risk of counterfeit or low-quality knockoffs that could fail quickly or cause further damage. This is particularly important for older vehicles where reliability is critical.

Fourth, the part is readily available through most automotive parts retailers, both online and in-store, making it easy to source. This accessibility means you can order it quickly and have it shipped to your location without significant delays.

Finally, the price of the Dorman SX-4021 is typically reasonable compared to OEM (original equipment manufacturer) parts, offering a cost-effective solution without sacrificing quality. This makes it an attractive option for restorers or owners looking to maintain their vehicle without breaking the bank.

---

While the Dorman SX-4021 has many advantages, there are a few potential drawbacks to consider. First, like any aftermarket part, there is always a slight risk of receiving a defective unit, even from a reputable brand. While rare, this possibility exists, and you may need to return the part or wait for a replacement, which could cause delays in your project.

Second, the installation process for a door lock actuator motor can be somewhat involved, especially if you are not experienced with automotive electrical or mechanical work. You may need to disconnect wiring harnesses, remove trim panels, and potentially adjust or replace wiring connectors. If you are not comfortable with these tasks, you might need to pay a mechanic to install the part, adding to the overall cost.

Third, while Dorman parts are generally reliable, no component is immune to wear over time. The SX-4021 may eventually fail due to age, electrical issues, or other factors beyond the manufacturer s control. This is true of both aftermarket and OEM parts, so it s important to budget for potential future replacements.

Fourth, if you are restoring a classic vehicle, you may prefer the look and feel of an original or period-correct part. While the Dorman actuator functions well, it may not match the aesthetic of a fully restored interior. In such cases, sourcing an OEM part or a high-quality reproduction might be more desirable, though these can be harder to find and more expensive.

Finally, depending on where you purchase the part, there may be variations in quality or authenticity. Buying from lesser-known sellers or untrusted online marketplaces could expose you to counterfeit or substandard parts, which may not perform as expected. Always verify the seller s reputation before making a purchase.

---

After weighing the pros and cons, the Dorman SX-4021 rear right door lock actuator motor is a strong choice for your 1977 1989 Oldsmobile 98. Its direct compatibility, reliability, and widespread availability make it a practical and cost-effective solution for replacing a faulty or worn actuator. The brand s reputation for quality and the part s ease of installation further strengthen its appeal.

However, if you are restoring a vehicle where authenticity is a priority or if you lack the mechanical skills to install the part yourself, you may need to weigh the convenience of an aftermarket solution against the desire for original or reproduction components. In most cases, especially for functional repairs, the Dorman part is an excellent option.

**Recommendation:** Proceed with purchasing the Dorman SX-4021 if you prioritize reliability, ease of installation, and cost-effectiveness. Ensure you buy from a trusted supplier to avoid counterfeit parts, and be prepared for the installation process, either by doing it yourself or hiring a professional. If you encounter any issues during installation or use, contact Dorman s customer service or your retailer for support. Overall, this part is a solid choice for maintaining or restoring your Oldsmobile 98.

Details:

Dorman Rear Right Door Lock Actuator Motor for 1977 1989 Oldsmobile 98 Body ww: Status: In Stock.

part #: sx4021 prices

• $29.07-$70.14

specifications carlockiio:

• for makes: Oldsmobile
• for years: 1977-1998
• brand: Dorman Oe Solutions
• mpn: Sx-4021
• type: Door Lock Actuator Motor
• placement on vehicle: Body Doors
• manufacturer warranty: 1 Year / 2 Years / 3 Years / 5 Years Depending On Part
• ipn: C736 28-51
• compatible year: 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977
• core charge: Free No Core Charge
• position: Rear Right
• fitment type: Direct Replacement
• bundle description: 1 Pc Genuine Dorman Door Lock Actuator Motor

payments carlockiio:

• other
• wallet: Paypal
• credit card: Discover

shipping carlockiio:

• transit: 3-6 Days
• service: Standard, Expedited
• cost: $0.00
• class: Standard, Expedited
• type: Fixed

returns carlockiio:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

offer carlockiio:

• quantity: 1
• started: March 28, 2026
• sold: 0
• availability: In Stock
• options: Ship-to-home

seller carlockiio:

• # reviews: 638660
• rating: 99.6%
• city: Indianapolis, Indiana

general carlockiio:

• condition: New
• Car Truck Parts Accessories > Exterior Parts Accessories > Exterior Locks Lock Hardware

Dorman Oe Solutions SX-4021 Is Similar To:

• 019495375760 Dorman Door Lock Actuator Motor (42.8% similar) Is that mean of us. You really need to read all three sections so don't end up getting a different experience than what were hoping for. We put lots of ways to so that you can actually, well, know. Despite how wonderful we are, don't like people going into our pockets to spend money. Dorman door ...(November 7th, 2018)
• 019495383109 Dorman Trunk Lock Actuator (31.4% similar) Open box return items usually are opened to display in store, try on and tested functionality, or original condition. Its not going to help for any issue. The exact item is shown in pictures. Dorman trunk lock actuator: the item is a customer return without original box. Open box items may show ...(March 31st, 2018)
• 019495520665 Dorman 937-232 Door Lock (27.5% similar) The item may be a factory second or new, unused with defects. The item may be missing original packaging, or in packaging but not sealed. Shipping is provided only to the lower 48 states in united. Item must be in its original or resealable condition. Dorman door lock actuator motor item condition ...(July 14th, 2017)
• 030-209 Dorman Door Lock Rod (29.5% similar) If you are buying large or heavy items and have any doubt about fit please first. This can save you time and possible return shipping costs. If you prefer a shipper let us know when place the order. If your vehicle was not purchased in the us please research advance to be sure of fit...(May 5th, 2017)
• 037495383868 Dorman Door Hinge Pin Bushing Kit (24.5% similar) Dorman door hinge pin bushing kit...(November 3rd, 2018)
• 19495732792 Dorman Genuine For Kia (23.7% similar) Genuine for KIA 2F030 door lock actuator open box - new this item comes with all accessories supplied by manufacturer, except the manual is not included. Protectorates. 609780GENUOB51. Please for details. Cash is accepted, but only upon local pick-up. Brand: Dorman product features: restore the ease...(March 29th, 2017)
• Hinge Kit Dorman 1991-1994 Bushing Bravada Fits Pin Oldsmobile Door (30.6% similar) Last updated 12 41 pm about the brand Dorman is a supplier of automotive replacement parts and fasteners and service line products primarily for the automotive and heavy vehicle aftermarkets. Est, Mon to Fri...(October 26th, 2014)
• Oe Lock Fits Camry Toyota Door Motor 1992-2001 Solution Dorman Actuator (32.6% similar) Est, Mon to Fri. Dorman Oe Solutions supplied your vehicles manufacturer with the door lock motor...(October 26th, 2014)
• Motor Lock Oe 2006-2010 Fits Actuator Mercury Door Solutio Milan Dorman (36% similar) We market approximately 133,000 products which are sold under several Dorman sub brands Oe Solutions, help. Dorman Oe Solutions supplied your vehicles manufacturer with the door lock motor. Last updated 03 22 am about the brand Dorman is a supplier of automotive replacement parts and fasteners and ...(October 30th, 2014)
• Actuator Mercury Dorman Solut Mariner Door 2008-2011 Oe Lock Motor Fits (19.8% similar) Last updated 03 22 am about the brand Dorman is a supplier of automotive replacement parts and fasteners and service line products primarily for the automotive and heavy vehicle aftermarkets. Dorman Oe Solutions supplied your vehicles manufacturer with the door lock motor. Est, Mon to Fri. We market...(October 30th, 2014)
• Door 2009-2012 Toyota Solutions Latch Oe Corolla Dorman Fits Assembly (34.1% similar) Est, Mon to Fri. We market approximately 133,000 products which are sold under several Dorman sub brands Oe Solutions, help. Last updated 04 58 pm about the brand Dorman is a supplier of automotive replacement parts and fasteners and service line products primarily for the automotive and heavy ...(October 22nd, 2014)