E-Mails     |     Covid-19 Updates

Z Car Parts350Z Source370Z SourceThe Z Store Join Z-Mail! It's Free!Search the 70-96, 350Z, or 370Z Store
Classic Z (70-96) Store 350Z Store 370Z Store The Z Store Home Page
Store Front  Account  Search  Product List Basket Contents  Checkout 

Log In

Mini Basket (click for full basket)
Shopping Cart Is Empty

Saved Baskets

Classic Z/ZX Parts Home
   New Products & Specials
     All New Products
     New Reproductions
     New Obsolescent Parts
     New Refurbished Parts
     Recently Added Items
     Price Drops!
     Closeouts & Special Purchases
   Weatherstrip & Rubber
   Emblems & Decals
   Wheels & Accessories
   Restoration & Car Care
   Tools & Equipment
   Heating & Air Conditioning
   Electrical & Lighting
   Ignition / Tune Up Kits
   Engine & Engine Bay
   V8 Conversion
   Cooling System
   Emission Control Systems
   Fuel & Air Intake Systems
   Turbocharging System
   Headers & Exhaust
   Steering & Suspension
   Brake & Hub
   Clutch & Drivetrain
   Manuals & Media
   Gifts, Apparel, & More

350Z Parts Home

370Z Parts Home

Z Enthusiast Gift Ideas

Clearance Corner

Z-Mail Exclusives

Car Shows & Events

Z Store Information

Gift Certificates!

Not Forgotten

Store Front > Classic Z/ZX Parts Home > New Products & Specials > All New Products > Koyo R-Series Performance/Racing Cross-Flow Aluminum Radiator, Manual Trans, 70-78 240Z-260Z-280Z

| More


Koyo R-Series Performance/Racing Cross-Flow Aluminum Radiator, Manual Trans, 70-78 240Z-260Z-280Z

Koyo R-Series Performance/Racing Cross-Flow Aluminum Radiator, Manual Trans, 70-78 240Z-260Z-280ZQuantity in Basket:none
Code: 16-6931

  • (1) Koyo R-Series Aluminum Radiator

Koyo engineers have designed some unique features into this radiator. Unlike the traditional downflow style of the OEM Datsun radiator, the Koyo performance radiator is manufactured with a robust 53mm crossflow core design, which makes it great for performance and racing, or just really hot climates. It is even strong enough to use with a V8 conversion. Included is an integrated 1/8 PT female accessory fitting located near the top inlet tube. This fitting (supplied with a threaded plug) will accept a 1/8 PT temperature sensor supplied with most aftermarket temperature gauges, or may even accept a coolant line for aftermarket turbochargers. Every Koyo All Aluminum Performance radiator is engineered in Japan, precision welded and polished by hand, and are a direct fit in the 240Z, 260Z & 280Z factory location for an easy installation. Koyo’s global reputation for high quality cooling products begins with the selection of the finest materials. Koyo privately owns each factory, never outsources their manufacturing and overseeing each stage of production using Japanese made equipment throughout the production of each radiator. Koyorad All Aluminum Performance Radiators are hand assembled, precision TIG welded, and triple pressure tested throughout the manufacturing process contributing to reliability and uniformity. The superior quality of Koyorad all aluminum radiators will take your vehicle’s engine performance to the next level.

Feature Highlights
  • Koyo “R-Series” Technology
  • Crossflow Design
  • OE S30 Specific mounting
  • Polished finish
  • Nocolok-R Brazing
  • Precise Tube and Fin alignment
  • Billet aluminum filler neck
  • 1/8 PT Accessory Fitting and threaded plug

Installation Requirements:
Stock S30 Radiator Caps will not work with this radiator, and Koyo does not include proper sized cap. See 16-6930 in Related Items below for the correct cap. We recommend purchasing two of part number 16-7202 (240Z lower radiator hose) for use with this radiator. One hose will connect the Water Inlet on the Timing Cover to the lower port on the radiator. The second hose will need to be trimmed to fit for the upper hose. See 16-7202 in Related Items below. 280Z Owners: the 280Z lower hose can be modified to work as the upper hose; however, this usually causes a kink to form in the hose and is not recommended. The shape of the 240Z hose makes it a much better fit. Note: There are no provisions for the stock fan shroud; however, the cooling capacity of this radiator should be more than enough to compensate for the lack of a shroud in most cases.

Application Note:
This radiator is designed for Manual Transmission models. A separate, external Automatic Transmission Cooler must be installed in order to use this radiator with Auto Trans. Models. See 17-8053 in Related Items below.

Fan Guide:
Crossflow Aluminum Radiators can be used with a stock S30 fan, or an electric fan ONLY if mounted with our 16-7059 Mounting Bracket. Use of standard electric fan tie kits (that "hang" the fan by inserting plastic "rods" through the radiator fins) with our cross flow aluminum radiators will void the warranty on the radiator. See Related Items.

Model Guide:
Datsun 240Z, 260Z, 280Z

Code Guide:
Datsun S30

Year Guide:
1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978

Related Item(s)

Tornado Electric Fan Kit
Price: $149.95
Quantity in Basket: none

Radiator Hose, Lower, 70-73 240Z
Price: $25.23
Quantity in Basket: none

Electric Fan Mounting Bracket
Price: $56.95
Quantity in Basket: none

Mishimoto Transmission / Power Steering / Oil Cooler
Price: $85.95
Quantity in Basket: none

Koyo Radiator Cap for Koyo Radiator 16-6931
Price: $37.87
Quantity in Basket: none

Attention California Customers:
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

Copyright © 1979-2022 Motorsport Industries and The Z Store. All rights reserved on all content.
Images used may not exactly match your specific application. Prices are subject to change. More information. Nissan, Datsun, and all other manufacturer names mentioned throughout this website are registered trademarks of their respective companies, and are used solely for descriptive purposes.