Home› Electrical, Lighting and Body > Electrical Sockets› Motormite 85821 Turn Signal Light Socket
Motormite 85821 Turn Signal Light SocketOE Quality 60-Day Returns
Motormite 85821 Turn Signal Light Socket - view 1
Motormite 85821 Turn Signal Light Socket - view 2
Part #: 85821

Motormite 85821 Turn Signal Light Socket

N/A
⚙️ 20 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$19.15Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
✅OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Cadillac, Oldsmobile, and Buick, Calais, DeVille, Eldorado, Fleetwood, 98, Delta 88, Skylark, Electra, LeSabre, Riviera, Sportwagon, Wildcat, and Toronado
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST
Not what you need? Click here for all Turn Signal Light Socket options

Reliable Turn Signal Light Socket for Buick, Cadillac, and Oldsmobile

The Motormite 85821 turn signal light socket is designed to provide a secure electrical connection for your vehicle's tail and stop lights. Compatible with select Buick, Cadillac, and Oldsmobile models, this socket ensures proper function of your turn signal lights with a durable design and included wiring.

  • Three-wire configuration for accurate signal transmission
  • Female terminal design with plastic socket terminals
  • Overall length of 13 inches including wire pigtail
  • Includes twist-lock tail and stop light socket for easy installation
  • Wire pigtail included for direct connection

Product Details and Specifications

The Motormite 85821 turn signal light socket features a female terminal socket made from plastic material, designed to fit securely with compatible bulbs. The socket comes with a 13-inch wire pigtail, allowing for flexible routing and connection within the vehicle's lighting system. This part is specifically engineered for use in Buick models such as the LeSabre, Riviera, and Skylark; Cadillac models including DeVille, Eldorado, and Fleetwood; and Oldsmobile models like the Delta 88 and Toronado. The twist-lock design ensures a firm hold on the tail and stop light bulbs, reducing the risk of loose connections.

Compatible Vehicles and Applications

This turn signal light socket is compatible with the following makes and models:

  • Buick LeSabre, Riviera, Skylark
  • Cadillac DeVille, Eldorado, Fleetwood
  • Oldsmobile Delta 88, Toronado

Use this socket to replace worn or damaged turn signal light sockets in these vehicles to restore proper lighting function and maintain safety standards.

Common Issues Addressed by This Socket

  • Intermittent or non-functioning turn signal lights
  • Corroded or damaged socket terminals causing poor electrical contact
  • Loose bulb connections leading to flickering lights
  • Broken or frayed wiring in the turn signal circuit
  • Difficulty securing bulbs due to worn twist-lock sockets

Installation Notes and Tips

Installation of the Motormite 85821 socket requires basic electrical knowledge. Disconnect the vehicle battery before beginning work to avoid electrical shorts. The included wire pigtail simplifies connection to the existing wiring harness. Ensure the twist-lock socket is fully engaged with the bulb to prevent loose connections. Verify proper operation of the turn signal lights after installation. This socket is not water resistant, so inspect surrounding seals and gaskets to prevent moisture intrusion.

Quality Assurance and Warranty

Motormite parts are manufactured to meet OEM specifications for fit and function. The 85821 turn signal light socket is made with durable plastic terminals and wiring designed for automotive electrical systems. While this product does not include a specific warranty statement, Motormite parts typically carry a limited warranty against manufacturing defects. For detailed warranty information, consult the product packaging or manufacturer resources.

BrandMotormite
Part Number85821
Overall Length13 in with wire (2 in without)
Package ContentsTwist-lock Tail and Stop Light Socket
Terminal DesignSocket
Terminal GenderFemale
Terminal MaterialPlastic
Water ResistantNo
Wire Pigtail IncludedYes
Wire Quantity3

This part fits 20 vehicles. Search below:

YearMakeModelPositionNotes
1973CadillacDeVilleN/AEnsure compatibility by comparing terminals to original socket for a 3-wire female Parking Light Bulb Socket.
1973CadillacEldoradoN/AEnsure compatibility by comparing terminals to original socket for a 3-wire female Parking Light Bulb Socket.
1973CadillacFleetwoodN/AEnsure compatibility by comparing terminals to original socket for a 3-wire female Parking Light Bulb Socket.
1973Oldsmobile98N/AEnsure compatibility by comparing terminals to original socket for a 3-wire female Parking Light Bulb Socket.
1973OldsmobileDelta 88N/AEnsure compatibility by comparing terminals to original socket for a 3-wire female Parking Light Bulb Socket.
1972BuickSkylarkN/AEnsure compatibility by comparing terminals to original socket for a 3-wire female Parking Light Bulb Socket.
1972Oldsmobile98N/AEnsure compatibility by comparing terminals to original socket for a 3-wire female Parking Light Bulb Socket.
1971BuickSkylarkN/AEnsure compatibility by comparing terminals to original socket for a 3-wire female Parking Light Bulb Socket.
1971Oldsmobile98N/AEnsure compatibility by comparing terminals to original socket for a 3-wire female Parking Light Bulb Socket.
1970BuickLeSabreN/AEnsure compatibility by comparing terminals to original socket for a 3-wire female Parking Light Bulb Socket.
1970BuickRivieraN/AEnsure compatibility by comparing terminals to original socket for a 3-wire female Parking Light Bulb Socket.
1970BuickSkylarkN/AEnsure compatibility by comparing terminals to original socket for a 3-wire female Parking Light Bulb Socket.
1970Oldsmobile98N/AEnsure compatibility by comparing terminals to original socket for a 3-wire female Parking Light Bulb Socket.
1970OldsmobileToronadoN/AEnsure compatibility by comparing terminals to original socket for a 3-wire female Parking Light Bulb Socket.
1969BuickLeSabreN/AEnsure compatibility by comparing terminals to original socket for a 3-wire female Parking Light Bulb Socket.
1969BuickRivieraN/AEnsure compatibility by comparing terminals to original socket for a 3-wire female Parking Light Bulb Socket.
1969BuickSkylarkN/AEnsure compatibility by comparing terminals to original socket for a 3-wire female Parking Light Bulb Socket.
1969OldsmobileToronadoN/AEnsure compatibility by comparing terminals to original socket for a 3-wire female Parking Light Bulb Socket.
1968BuickLeSabreN/AEnsure compatibility by comparing terminals to original socket for a 3-wire female Parking Light Bulb Socket.
1968BuickRivieraN/AEnsure compatibility by comparing terminals to original socket for a 3-wire female Parking Light Bulb Socket.

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

2572F784867820138902485

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

Related Articles