

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The CROWN ENGINEERING 40454 is a straight oil line measuring 3/16 inches in outer diameter and 12 inches in length. It is designed to carry fuel oil within oil-fired heating systems, connecting the oil supply to burner components. This line is a common service replacement used by HVAC technicians and combustion equipment service pros working on residential and light commercial oil-fired boilers and furnaces. Its straight configuration suits straightforward inline connections where no bending or angled routing is required.
This oil line is suited for use in oil-fired heating systems where a straight, fixed-length fuel line is needed between the oil tank supply and burner assembly. It is a direct-replacement service part intended for technicians performing routine maintenance, burner tune-ups, or fuel line replacements on oil heat equipment.
Designed as an OEM-style replacement oil line for oil-fired residential and light commercial heating equipment requiring a straight 3/16 inch OD by 12 inch fuel line.
Installation should be performed by a licensed HVAC or oil burner service technician. Shut off the fuel supply valve and allow any residual line pressure to dissipate before removing the existing oil line. Ensure all fittings are properly seated and leak-free before restoring fuel flow and firing the burner. Follow applicable local and national fuel oil system codes when replacing fuel lines.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
Add install kit to cart
—
Thanks for subscribing!
This email has been registered!