1978 Pontiac Bonneville By-Pass Hoses

Your 1978 Pontiac Bonneville might be the best vehicle you’ve ever owned. Or you may just be struggling to keep it highway-approved. No matter the situation, Advance Auto Parts has the By-Pass Hoses you desperately need.

We currently carry 3 By-Pass Hoses to choose from for your 1978 Pontiac Bonneville, and our inventory prices range from as little as $3.99 up to $23.49.

On top of low prices, Advance Auto Parts offers 2 different trusted brands of By-Pass Hoses for the 1978 Pontiac Bonneville. We only sell parts from trusted brands like Dayco so that you can find quality parts you can count on.

Don’t take our word for it – check out customer ratings and reviews to buy with confidence. We have 58 reviews on our By-Pass Hoses for the 1978 Pontiac Bonneville from previous customers.

Have parts delivered straight to your home, or find the nearest Advance Auto Parts store to check out our By-Pass Hoses stock in-person!

By-Pass Hoses for Your 1978 Pontiac Bonneville

Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 5" Long, .63" Diameter (Part No.A70619)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 5" Long, .63" Diameter

from

$5.49
The Dayco curved radiator hose features knitted reinforcement, a protective sleeve and a synthetic EPDM rubber construction for high-strength performance, protection against abrasion and resistance to oil, mud, salt, road debris, ozone and coolants. It can also withstand temperature variations of -40 Deg. F (-40 Deg. C) to +257 Deg. F (+125 Deg. C). The inner base tube is reinforced with knitted rayon for maximum strength and burst resistance for the life of the hose.

Product Features:
  • Meets SAE J20R4, Class D-1 requirements
  • Meets Type EC electro-chemical requirements as specified in SAE J1684, which prevents inner tube deterioration caused by the build-up of static electric charges
  • Provides excellent protection against external elements
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Dayco – Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 18 Inch Length (Part No.80402)

Molded Heater Hose; EPDM Rubber, 5/8 Inch Diameter, 18 Inch Length

from

$23.49
Providing reliable service in applications requiring molded hoses, the Dayco heater hose is designed to replace OEM coolant hoses. Made with the same bends and routing as the original assembly, this molded hose is meant to fit the vehicle precisely. The knitted reinforcement and synthetic EPDM construction provide high-strength performance and resistance to detrimental environmental elements, coolants and temperature variations of -40°F (-40°C) to +257°F (+125°C) and the “quick connect” end allows for fast, convenient installation.

Product Features:
  • Meets the requirements of SAE J20R3, Class D-1
  • Designed to meet Type EC electro-chemical requirements as specified in SAE J1684, which prevents inner tube deterioration caused by the build-up of static electric charges
  • Engineered as an OEM replacement
  • Meets Type EC electro-chemical requirements as specified in SAE J1684
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Gates – Straight Heater Hose: EPDM, Direct Fit, 0.75" Inside Diameter (Sold by foot) (Part No.28412)

Straight Heater Hose: EPDM, Direct Fit, 0.75" Inside Diameter (Sold by foot)

from

$3.99
Premium hose constructed for long service life.

Product Features:
  • Good resistance to high temperatures for extended periods of time, which prolongs service life
  • Meets SAE 20R3 Standard Wall Class D-2 requirements
  • Temperature Range: -40 Deg. F to +257 Deg. F (-40 Deg. C to +125 Deg. C)
  • CAUTION: Do not use for fuel or oil transfer applications
  • CAUTION: Do not use for fuel or oil transfer applications
  • PLEASE NOTE: Item is priced and sold by the foot. See store for details.
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FAQs for 1978 Pontiac Bonneville By-Pass Hoses

What are the most popular By-Pass Hoses for the 1978 Pontiac Bonneville?

With 2 brands you can trust, our most popular By-Pass Hoses for the 1978 Pontiac Bonneville parts are:
Straight Heater Hose: EPDM, Direct Fit, 0.75" Inside Diameter (Sold by foot)
from $3.99
This product is not rated
Straight Heater Hose: EPDM, Direct Fit, 0.75" Inside Diameter (Sold by foot)
By-Pass Hoses