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Grizzly Injection Line (Cylinders 3 and 6) 01-04 GM 6.6L Duramax
Grizzly

Grizzly Injection Line (Cylinders 3 and 6) 01-04 GM 6.6L Duramax

MPN: GZ-GA93721

Restore proper high-pressure fuel delivery in your GM 6.6L Duramax LB7 with the Grizzly GA93721 Injection Line for cylinders 3 and 6. Designed as a direct replacement high-pressure fuel injection line, the GA93721 helps…

Street Performance
$71.98
Ships From Supplier · Ships in 37 business days
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Warranty
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Restore proper high-pressure fuel delivery in your GM 6.6L Duramax LB7 with the Grizzly GA93721 Injection Line for cylinders 3 and 6. Designed as a direct replacement high-pressure fuel injection line, the GA93721 helps maintain proper fuel rail pressure, injector sealing, and reliable common rail fuel system performance under towing, hauling, and daily driving conditions. The high-pressure injection lines on the Duramax LB7 are responsible for delivering precise fuel volume and pressure from the fuel rail to each injector. Damaged, leaking, bent, or contaminated lines can contribute to fuel pressure loss, hard starting, rough idle, poor drivability, fuel leaks, or injector performance issues. The Grizzly GA93721 is built to meet or exceed OEM specifications for dependable sealing integrity, proper fitment, and long service life.

Product conditions

Professional installation is recommended.

Return eligibility
Returnable within 30 days of confirmed delivery, in original condition, with an approved RMA
Return window
30 days from confirmed delivery
Restocking fee
No restocking fee
Return shipping
Customer pays return shipping on voluntary returns
Made to order
No
Backorder status
Not backordered
Cancellation
Cancellation is only possible before the supplier order is submitted
Warranty provider
Warranty Information Pending
Warranty duration
Pending verification
Compatibility
Listed for specific vehicle configurations
Legal use
Street legal
Processing estimate
3–7 business days supplier processing
Shipping
Shipping calculated at checkout
Signature
No signature requirement
Supplier
Grizzly

Product compatibility is based on the vehicle and product information provided. Review your selected truck, product options, measurements, modifications, and installation requirements before ordering.