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TRANSMISSION OIL COOLER 21 PLATE HYDRA-COOL (PART #678)


The Hydra-Cool® transmission oil cooler is an effective & economical way to keep the transmission at its optimum operating temperature. High efficiency turbulators in each tube direct the fluid for superior heat transfer. Hydra-Cool's® unique plate & fin design allows for effective cooling, yet requires 33% less space. The Hydra-Cool's® compact design is perfect for applications where available mounting space is limited.

  • 100% pressure tested at 150psi for quality assurance
  • 33% more efficient than a comparable tube and fin design
  • Pre-drilled mounting plates for easy installation
  • Internal tubulation for efficient heat transfer
  • 3/8” (9 mm) push-on fittings for quick and easy installation

KIT CONTENTS

DESCRIPTION UNITS

Hydra-Cool® 21-plate transmission oil cooler

1

3/8” hose (1.4 meters) 1
Hose clamps 4
Quick Fit Kits – nylon ties x4 2
Instructions 1

 

SPECIFICATIONS

PART # PLATES

DEPTH

mm

WIDTH

MM

HEIGHT

MM

INLET/OUTLET

SIZE

HOSE

SIZE

HEAT TRANSFER RATE (BTU/HR)
OIL COOLER KITS

676

12

20

281

141

3/8” (9 mm) 1.4m 11,987

677

17

20

281

180

3/8” (9 mm) 1.4m

13,394

678

21

20

281

213

3/8” (9 mm) 1.4m

13,934

623

23

20

281

229

3/8” (9 mm) 1.4m

13,937

679

30

20

281

300

3/8” (9 mm) 1.4m

15,710

TRANSMISSION OIL COOLER & ELECTRIC FAN COMBO

698 (12V)

699 (24V)

21 80 281 213 3/8” (9 mm) 1.4m 13,934

693 (12V)

694 (24V)

23 80 281 213 3/8” (9 mm) 1.4m 13,937

679 (12V)

691 (24V)

30 80 281 300 3/8” (9 mm) 1.4m 15,710
ADAPTER / FITTING KITS
1005 N/A

  Adaptor Kit - 5/16" 8mm - Suits GM Transmissions

1006

N/A

  TOC Fitting Kit (6R80) - Ford Ranger & Mazda BT50

 

TRANSMISSION OIL COOLER SELECTION

APPLICATION 

 

RECOMMENDED PART

Vehicle Type

Year of Manufacture

Engine Capacity

 

Medium Duty Part #

Heavy Duty

Part #

Sedan / Wagon

Up to 1990*

Up to 2.0 litre

 

401

403

2.0 - 4.0 litre

 

403

404

4.0 litre +

 

404

676 or 677

Commercial

Up to 1990*

Up to 2.0 litre

 

401

403

2.0 - 4.0 litre

 

404

676 or 677

4.0 litre +

 

 Core Only: 678, 623 or 679

Core & Fan: 678, 693 or 691

Sedan / Wagon

1990 to Present

Up to 2.0 litre

 

676

677

2.0 - 4.0 litre

 

677

Core Only: 678, 623 or 679

Core & Fan: 698, 623 or 691

4.0 litre +

 

Core Only: 678, 623 or 679

Core & Fan: 698, 623 or 691

Light Commercial 

(12 Volt circuit, Automatic Trans.)

1990 to Present

Up to 2.0 litre

 

676

677 or 678

2.0 - 4.0 litre

 

677

Core Only: 678, 623 or 679

Core & Fan: 698, 623 or 691

4.0 litre +

 

Core Only: 678, 623 or 679

Core & Fan: 698, 623 or 691

Light Commercial 

(24 Volt circuit, Automatic Trans.)

 

Up to 2.0 litre

 

699, 694 or 692

2.0 - 4.0 litre

 

699, 694 or 692

692

4.0 litre +

 

692

692

V8s & 4WDs

1990 to Present

Up to 2.0 litre

 

676

677

2.0 - 4.0 litre

 

Core Only: 678, 623 or 679

Core & Fan: 698, 623 or 691

4.0 litre +

 

Ford EA-ED

all models

6 cyl.

 

677

677

Ford EA-ED

all models

V8

 

678

678

ADAPTER / FITTING KITS

GM-Holden

all models

6 cyl. & V8

 

Select Part above

plus #1005

Select Part above

plus #1005

Mazda BT-50

Ford Ranger

all models

6 cyl. & V8

 

Select Part above

plus #1006

Select Part above

plus #1006

 

*Note: Hydra-Cool Transmission Coolers are suitable for all vehicles.

**Ultra-Cool Transmission Coolers are only recommended for vehicles manufactured prior to 1990.

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