1966 Cadillac Fleetwood Parts

TCI

PRO-X GM TH400 Transmission

Part Number: 890-212507PX1

Ships on 11/19/2026

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

MELLING

CSL2256 Cylinder Sleeve Bore: 4.1250"

Part Number: 689-CSL2256

^$31⁹⁹

MELLING

CSL2256 Cylinder Sleeve Bore: 4.1250"

Part Number: 689-CSL2256

^$31⁹⁹

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

MOOG

Axle U-Joint

Part Number: 719-534G

^$25⁹⁹

MOOG

Axle U-Joint

Part Number: 719-534G

^$25⁹⁹

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

MR GASKET

Transmission Oil Pan Gasket

Part Number: 720-61082MRG

^$46¹²

MR GASKET

Transmission Oil Pan Gasket

Part Number: 720-61082MRG

^$46¹²

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

LOKAR

VS-24002 Vintage Series Kickdown Cable Kit

Part Number: 625-VS-24002

^$161⁹⁵

LOKAR

VS-24002 Vintage Series Kickdown Cable Kit

Part Number: 625-VS-24002

^$161⁹⁵

LOKAR

VS-24006 Vintage Series Kickdown Cable Kit

Part Number: 625-VS-24006

^$161⁹⁵

LOKAR

VS-24006 Vintage Series Kickdown Cable Kit

Part Number: 625-VS-24006

^$161⁹⁵

RETROSOUND

Deluxe Dash Replacement Speaker 4" x 10" Oval

Part Number: 700-R-410UK

^$81⁹⁹

RETROSOUND

Deluxe Dash Replacement Speaker 4" x 10" Oval

Part Number: 700-R-410UK

^$81⁹⁹

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

DYNAMIC FRICTION

Brake Wheel Cylinder, 1940-1982 Multiple Makes/Models, Position: Rear Left/Driver

Part Number: 328-375-52012

^$19²²

DYNAMIC FRICTION

Brake Wheel Cylinder, 1940-1982 Multiple Makes/Models, Position: Rear Left/Driver

Part Number: 328-375-52012

^$19²²

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

CHAMPION SPARK PLUGS

Copper Plus Spark Plug [J8C, 14mm Thread, .375 in. Reach, Heat Range 8]

Part Number: 192-841

^$4⁹⁹

CHAMPION SPARK PLUGS

Copper Plus Spark Plug [J8C, 14mm Thread, .375 in. Reach, Heat Range 8]

Part Number: 192-841

^$4⁹⁹

FRAGOLA PERFORMANCE SYSTEMS

-16 AN Replacement Sport-crimp Collar

Part Number: 305-3100016S

^$11⁵⁹

FRAGOLA PERFORMANCE SYSTEMS

-16 AN Replacement Sport-crimp Collar

Part Number: 305-3100016S

^$11⁵⁹

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