1966 Cadillac Eldorado Parts

TCI

PRO-X GM TH400 Transmission

Part Number: 890-212507PX1

Ships on 11/20/2026

Free shipping

^$9,111⁹⁵

MR GASKET

Push-On Breather Fits Valve Cover Openings with 1.22" Diameter

Part Number: 720-9810BP

^$12⁰³

MR GASKET

Push-On Breather Fits Valve Cover Openings with 1.22" Diameter

Part Number: 720-9810BP

^$12⁰³

TRANS GO

Reprogramming Kit TH400

Part Number: 887-400-1/2

^$95⁰¹$105.57

YOU SAVE

$10.56

TRANS GO

Reprogramming Kit TH400

Part Number: 887-400-1/2

^$95⁰¹ $105.57

YOU SAVE

$10.56

MALLORY

Mallory E-Spark Conversion Kit 8-Cylinder

Part Number: 650-61001M

^$169⁹⁵

MALLORY

Mallory E-Spark Conversion Kit 8-Cylinder

Part Number: 650-61001M

^$169⁹⁵

TCI

Transmission Thrust Washer Kit 1966-91 GM TH400

Part Number: 890-243600

^$47⁹⁵

TCI

Transmission Thrust Washer Kit 1966-91 GM TH400

Part Number: 890-243600

^$47⁹⁵

B&M

Shift Improver Kit 1965-1987 GM TH400/TH375/M40

Part Number: 130-20260

^$77¹⁵

B&M

Shift Improver Kit 1965-1987 GM TH400/TH375/M40

Part Number: 130-20260

^$77¹⁵

B&M

Tork Master 2000 Torque Converter 1965-1991 GM TH375, TH400 & TH425

Part Number: 130-20400

^$349⁹⁵

B&M

Tork Master 2000 Torque Converter 1965-1991 GM TH375, TH400 & TH425

Part Number: 130-20400

^$349⁹⁵

B&M

Nitrous Holeshot 3500 Torque Converter GM TH400, TH425, TH375, TH350, TH375B (not TH350C)

Part Number: 130-20484

^$675⁹⁵

B&M

Nitrous Holeshot 3500 Torque Converter GM TH400, TH425, TH375, TH350, TH375B (not TH350C)

Part Number: 130-20484

^$675⁹⁵

GATES

Oil Filler Cap for Select 1939-1968 Buick, Cadillac, Chrysler, Dodge, Edsel, Ford, GMC, Jeep, Lincoln, Mercury, Oldsmobile

Part Number: 465-31061

^$10⁴⁵

GATES

Oil Filler Cap for Select 1939-1968 Buick, Cadillac, Chrysler, Dodge, Edsel, Ford, GMC, Jeep, Lincoln, Mercury, Oldsmobile

Part Number: 465-31061

^$10⁴⁵

GATES

33508 Thermostat for Select 1933-2008 Makes & Models [180 Degree F]

Part Number: 465-33508

^$16¹⁴

GATES

33508 Thermostat for Select 1933-2008 Makes & Models [180 Degree F]

Part Number: 465-33508

^$16¹⁴

B&M

Holeshot 2400 Torque Converter 1965-1991 GM TH375/TH400/TH425

Part Number: 130-20412

^$584⁹⁵

B&M

Holeshot 2400 Torque Converter 1965-1991 GM TH375/TH400/TH425

Part Number: 130-20412

^$584⁹⁵

FAST

EZ-EFI Hand-Held Upgrade Kit

Part Number: 244-170633-06KIT

^$415⁹⁵

FAST

EZ-EFI Hand-Held Upgrade Kit

Part Number: 244-170633-06KIT

^$415⁹⁵

GATES

Thermostat Universal 180 Degrees

Part Number: 465-33008

^$23⁷⁶

GATES

Thermostat Universal 180 Degrees

Part Number: 465-33008

^$23⁷⁶

GATES

Molded Radiator Hose for Select 1941-1996 Pontiac, Cadillac and Other Makes

Part Number: 465-20046

^$29²⁴

GATES

Molded Radiator Hose for Select 1941-1996 Pontiac, Cadillac and Other Makes

Part Number: 465-20046

^$29²⁴

HAYS

Twister 3/4 Race Torque Converter

Part Number: 490-97-1D24Q

^$571⁹⁵

HAYS

Twister 3/4 Race Torque Converter

Part Number: 490-97-1D24Q

^$571⁹⁵

MCGARD

24130 Locking Lug Nuts, Chrome Cone Seat Style Thread Size: 1/2-20 Key Hex Size: Dual Includes 4 Lug Nuts & 1 Key

Part Number: 671-24130

^$22⁹⁹

MCGARD

24130 Locking Lug Nuts, Chrome Cone Seat Style Thread Size: 1/2-20 Key Hex Size: Dual Includes 4 Lug Nuts & 1 Key

Part Number: 671-24130

^$22⁹⁹

STEF'S

GM Turbo 400 Aluminum Trans Pan Spacer included

Part Number: 861-4004

^$329⁹⁹

STEF'S

GM Turbo 400 Aluminum Trans Pan Spacer included

Part Number: 861-4004

^$329⁹⁹

EDELBROCK

Transmission Throttle Valve (TV) Cable Adapter

Part Number: 350-8026

^$19⁹⁵

Ships on 11/04/2026

EDELBROCK

Transmission Throttle Valve (TV) Cable Adapter

Part Number: 350-8026

Ships on 11/04/2026

^$19⁹⁵

OER

CTS6566 Convertible Top Rear Tack Strip Bow Set for 1965-1966 Buick, Cadillac, Chevy, Pontiac, Oldsmobile, B-Body

Part Number: 691-CTS6566

^$189⁹⁹

OER

CTS6566 Convertible Top Rear Tack Strip Bow Set for 1965-1966 Buick, Cadillac, Chevy, Pontiac, Oldsmobile, B-Body

Part Number: 691-CTS6566

^$189⁹⁹

B&M

Speedometer Cable & Generator For GM Converter Lock-Up Control Kit 130-70244

Part Number: 130-70209

^$155⁹⁵

B&M

Speedometer Cable & Generator For GM Converter Lock-Up Control Kit 130-70244

Part Number: 130-70209

^$155⁹⁵

DORMAN PRODUCTS

Steel Cup Expansion Plug Diameter 2-3/32"

Part Number: 326-362566.1

^$1⁴⁹

DORMAN PRODUCTS

Steel Cup Expansion Plug Diameter 2-3/32"

Part Number: 326-362566.1

^$1⁴⁹

POWERMASTER

GM 12si-Style Alternator Chrome

Part Number: 713-17294

^$166⁹⁹

POWERMASTER

GM 12si-Style Alternator Chrome

Part Number: 713-17294

^$166⁹⁹

TCI

Pressure Regulator Spring GM TH400

Part Number: 890-224300

^$19⁵⁷$25.95

YOU SAVE

$6.38

TCI

Pressure Regulator Spring GM TH400

Part Number: 890-224300

^$19⁵⁷ $25.95

YOU SAVE

$6.38

TOYO TIRES

Extensa HP II All-Season Tire 245/45R20

Part Number: 894-196250

^$198⁴⁷$229.24

YOU SAVE

$30.77

TOYO TIRES

Extensa HP II All-Season Tire 245/45R20

Part Number: 894-196250