1966 Cadillac Commercial Chassis Parts

TCI

PRO-X GM TH400 Transmission

Part Number: 890-212507PX1

Ships on 12/11/2026

Free shipping

^$9,111⁹⁵

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

HUGHES PERFORMANCE

Replacement Gasket Set for GM TH400 Transbrake Valve Body

Part Number: 512-HP2216

^$14⁵⁷$18.99

YOU SAVE

$4.42

HUGHES PERFORMANCE

Replacement Gasket Set for GM TH400 Transbrake Valve Body

Part Number: 512-HP2216

^$14⁵⁷ $18.99

YOU SAVE

$4.42

MISHIMOTO

Silicone Lower Radiator Hose 1967-69 Firebird 326/ 350/ 400ci (Pontiac Engine)

Part Number: 690-MMHOSE-GM-4L

^$54⁹⁵

MISHIMOTO

Silicone Lower Radiator Hose 1967-69 Firebird 326/ 350/ 400ci (Pontiac Engine)

Part Number: 690-MMHOSE-GM-4L

^$54⁹⁵

MELLING

VL-200 Valve Spring Retainer Keeper

Part Number: 689-VL-200

^$3⁹⁹

MELLING

VL-200 Valve Spring Retainer Keeper

Part Number: 689-VL-200

^$3⁹⁹

JEGS

Automatic Transmission Pan for GM TH400, Stock Capacity [Chrome Plated Steel]

Part Number: 555-601181

^$24⁹⁹$27.99

YOU SAVE

$3.00

JEGS

Automatic Transmission Pan for GM TH400, Stock Capacity [Chrome Plated Steel]

Part Number: 555-601181

^$24⁹⁹ $27.99

YOU SAVE

$3.00

JEGS

TH400 Steel Transmission Pan, Filter & Fluid Kit

Part Number: 555-601184K

^$114⁹²

Ships on 11/16/2026

JEGS

TH400 Steel Transmission Pan, Filter & Fluid Kit

Part Number: 555-601184K

Ships on 11/16/2026

^$114⁹²

MR GASKET

Transmission Oil Pan Gasket

Part Number: 720-61082MRG

^$46¹²

MR GASKET

Transmission Oil Pan Gasket

Part Number: 720-61082MRG

^$46¹²

MR GASKET

Transmission Oil Pan

Part Number: 720-9786BMRG

^$92⁹⁵

MR GASKET

Transmission Oil Pan

Part Number: 720-9786BMRG

^$92⁹⁵

MR GASKET

Transmission Oil Pan

Part Number: 720-9796PMRG

^$132⁹⁵

MR GASKET

Transmission Oil Pan

Part Number: 720-9796PMRG

^$132⁹⁵

REPOPS

Package Tray 1965-1966 GM Full-Size

Part Number: 629-CP236

^$61⁷⁹

Ships on 11/05/2026

REPOPS

Package Tray 1965-1966 GM Full-Size

Part Number: 629-CP236

Ships on 11/05/2026

^$61⁷⁹

YUKON GEAR

ZSG6502 Power Steering Gear Box for 1959-1976 Cadillac Calais, Commercial Chassis, DeVille, Eldorado, Fleetwood, Seville

Part Number: 807-ZSG6502

^$426¹⁹

YUKON GEAR

ZSG6502 Power Steering Gear Box for 1959-1976 Cadillac Calais, Commercial Chassis, DeVille, Eldorado, Fleetwood, Seville

Part Number: 807-ZSG6502

^$426¹⁹

SPEEDMASTER

PCE634.1006.01 GM TH400 Transmission Billet Aluminum Full Manual Valve Body - Silver

Part Number: 746-PCE634100601

^$352⁶⁰

SPEEDMASTER

PCE634.1006.01 GM TH400 Transmission Billet Aluminum Full Manual Valve Body - Silver

Part Number: 746-PCE634100601

^$352⁶⁰

SPEEDMASTER

Powerglide Transmission Tailshaft Housing

Part Number: 746-PCE598.1001

^$209⁸⁰

SPEEDMASTER

Powerglide Transmission Tailshaft Housing

Part Number: 746-PCE598.1001

^$209⁸⁰

SPEEDMASTER

TH400 Transmission Tailshaft Housing

Part Number: 746-PCE598.1002

^$179⁶⁰

SPEEDMASTER

TH400 Transmission Tailshaft Housing

Part Number: 746-PCE598.1002

^$179⁶⁰

SPEEDMASTER

PCE542.1021 Chevy SBC BBC Ford SB to Powerglide & Reid TH400 Aluminum Bellhousing

Part Number: 746-PCE5421021

^$345⁰⁰

SPEEDMASTER

PCE542.1021 Chevy SBC BBC Ford SB to Powerglide & Reid TH400 Aluminum Bellhousing

Part Number: 746-PCE5421021

^$345⁰⁰

SPEEDMASTER

PCE542.1010 Ford FE 390 427 428 to Chevy GM Turbo TH400 Steel Bellhousing SFI 30.1

Part Number: 746-PCE5421010

^$561²⁰

SPEEDMASTER

PCE542.1010 Ford FE 390 427 428 to Chevy GM Turbo TH400 Steel Bellhousing SFI 30.1

Part Number: 746-PCE5421010

^$561²⁰

SPEEDMASTER

PCE598.1006 GM Turbo 400 TH400 Aluminum Tailhousing Without Bushing

Part Number: 746-PCE598.1006

^$40⁸⁰

Ships on 11/11/2026

SPEEDMASTER

PCE598.1006 GM Turbo 400 TH400 Aluminum Tailhousing Without Bushing

Part Number: 746-PCE598.1006

Ships on 11/11/2026

^$40⁸⁰

SPEEDMASTER

PCE634.1006.02 GM TH400 Transmission Billet Aluminum Full Manual Valve Body - Black

Part Number: 746-PCE634100602

^$352⁶⁰

SPEEDMASTER

PCE634.1006.02 GM TH400 Transmission Billet Aluminum Full Manual Valve Body - Black

Part Number: 746-PCE634100602

^$352⁶⁰

SPEEDMASTER

Heavy-Duty Planetary Gear Set for GM TH400 Transmission

Part Number: 746-PCE550.1006

^$1,768⁰⁰

SPEEDMASTER

Heavy-Duty Planetary Gear Set for GM TH400 Transmission

Part Number: 746-PCE550.1006

^$1,768⁰⁰

OPTIMA BATTERIES

Redtop 12-Volt Battery Model/BCI Group: 78

Part Number: 753-9078-109

^$319⁹⁹

Ships on 11/12/2026

OPTIMA BATTERIES

Redtop 12-Volt Battery Model/BCI Group: 78

Part Number: 753-9078-109

Ships on 11/12/2026

^$319⁹⁹

LOKAR

XTD-3350400FM36 Hi-Tech Flexible Braided Transmission Dipstick

Part Number: 625-XTD3350FM36

^$176⁹⁵

LOKAR

XTD-3350400FM36 Hi-Tech Flexible Braided Transmission Dipstick

Part Number: 625-XTD3350FM36

^$176⁹⁵

LOKAR

KDP-2400HT Hi-Tech Electric Kickdown Kit

Part Number: 625-KDP-2400HT

^$184⁹⁵

Ships on 11/04/2026

LOKAR

KDP-2400HT Hi-Tech Electric Kickdown Kit

Part Number: 625-KDP-2400HT

Ships on 11/04/2026

^$184⁹⁵

OER

WB126 1955-72 Buick, Cadillac, Chevy, Olds, Pontiac, Optikleen Bottle Cap

Part Number: 691-WB126

^$6¹³

OER

WB126 1955-72 Buick, Cadillac, Chevy, Olds, Pontiac, Optikleen Bottle Cap

Part Number: 691-WB126