OPGI.com works best with JavaScript enabled.

As seen on

  • Ride of Your Life Logo
  • All Girls Garage Logo

Bypass Hose, Coolant, 1981-85 Regal, 3.8 Turbo, 4.1, L-Shaped

Part# : RG10380
Sold As: Each
Ship Size: Standard
Price Match: Eligible
$8.99
List Price: $10.95
You Save 18%
Calendar IconArriving Soon
Vehicle Specific View fitment for 3 models
Add To Wishlist 

1981-85 Buick Regal Coolant Bypass Hose (3.8L Turbo/4.1L V6, L-Shaped)

Exact replacement L-shaped coolant bypass hose follows the original molded routing.

This L-shaped molded coolant bypass hose is an exact replacement for 1981-85 Buick Regal models equipped with the 3.8L turbo V6 or 4.1L V6. Continental 63641 measures 5.00 inches long with a 0.625-inch inside diameter at both ends and meets SAE 20R3EC Class D1/D2 requirements. The formed hose follows the original bypass-circuit routing rather than requiring a straight universal section.

• 1981-85 Buick Regal • 3.8L turbo V6 or 4.1L V6 • L-shaped molded bypass hose • 5.00-inch hose length • 0.625-inch ID at both ends • SAE 20R3EC Class D1/D2

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
1982 Buick Grand National 3.8 Turbo, 4.1, L-shaped
1984–1985 Buick Grand National 3.8 Turbo, 4.1, L-shaped
1981–1985 Buick Regal 3.8 Turbo, 4.1, L-shaped
1983–1985 Buick T-Type 3.8 Turbo, 4.1, L-shaped
  • 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.
Bypass Hose, Coolant, 1981-85 Regal, 3.8 Turbo, 4.1, L-Shaped
Bypass Hose, Coolant, 1981-85 Regal, 3.8 Turbo, 4.1, L-Shaped