OPGI.com works best with JavaScript enabled.

As seen on

  • Motorhead Garage Logo
  • Rust Valley Restorers Logo

Cooler Lines, TH400 Transmission, 1973-77 Grand Prix/LeMans/GTO, 2pc

Part# : GP03713
Sold As: Set
Ship Size: Oversize 3
$61.99
List Price: $68.95
You Save 10%
Vehicle Specific View fitment for 3 models
Add To Wishlist 

1973-77 Grand Prix/LeMans/1973 GTO TH400 Transmission Cooler Line Set, 2-Piece

Pre-bent two-piece TH400 transmission cooler line set for 1973–77 Pontiac A- and G-body models.

Maintain the original transmission cooling system of your 1973–77 Pontiac Grand Prix or LeMans, or 1973 GTO, with this reproduction cooler line set designed for vehicles equipped with a TH400 automatic transmission. Manufactured with factory-specification bends, these preformed lines follow the original routing between the transmission and radiator-mounted cooler, allowing transmission fluid to circulate through the cooling system and help regulate operating temperatures. Available in original-material steel for a factory-style appearance or stainless steel for enhanced corrosion resistance, this set provides an excellent replacement for original lines that have become rusted, damaged or deteriorated. Each two-piece set includes the transmission cooler lines with correctly flared tube ends and fittings for connection to the transmission and radiator. The preformed construction helps maintain the original plumbing arrangement while eliminating the need to measure, bend and flare replacement tubing from bulk material. Whether completing a comprehensive restoration or servicing the transmission cooling system, these replacement lines provide a convenient solution for maintaining proper fluid circulation and preserving the original appearance of your TH400-equipped Pontiac.

Features • Fits 1973–77 Pontiac Grand Prix and LeMans models • Also fits 1973 Pontiac GTO applications • Designed for TH400 automatic transmissions • Complete two-piece transmission cooler line set • Pre-bent to original factory specifications • Available in original-material steel or stainless steel • Stainless steel option provides enhanced corrosion resistance • Correctly flared tube ends for secure connections • Includes fittings for transmission and radiator connections • Connects the transmission to the radiator-mounted fluid cooler • Provides supply and return paths for transmission fluid • Eliminates the need to bend and flare replacement tubing • Ideal for replacing rusted, damaged or deteriorated original cooler lines

Notes

  • This item is Oversize 3, and is excluded from free ground shipping.
We aim to provide accurate and complete product information. If you notice anything incorrect, missing, or unclear, please let us know.
WARNING: This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4’-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Vehicle Fitment

Year Make Model Application Details
1973–1977 Pontiac Grand Prix TH400 (2-piece) - Grand Prix
1973 Pontiac GTO  
1973–1977 Pontiac LeMans  
  • Headshot of OPGI Employee
    Need help finding the right GM restoration parts? Contact a GM Parts Specialist
    Mon–Fri 8:00–4:30 PT
    Sat 10:00–3:00 PT
    GM Parts Specialist Offline
  • Price Match Guarantee Great parts. Competitive prices. Guaranteed.
  • GM Restoration Experts Since 1982 Over four decades dedicated to GM restoration
  • Original GM Is Our Standard Original GM parts and factory references guide every reproduction
  • A Deeper GM Selection Thousands of restoration, performance, and replacement parts

Customers Who Viewed This Item Also Viewed

Reviews (0)

UH OH! Product reviews didn't load.
Please reload the page, or unblock our review partner Yotpo.com.