Fuel Injector Clinic 525cc High Impedance Fuel Injector Set for 1983-1986 Buick Regal T-Type & 1984-1987 Buick Grand National (IS309-0525H)
Give your turbo Buick the fueling precision it deserves with the Fuel Injector Clinic IS309-0525H 525cc High Impedance Fuel Injector Set. Designed specifically for the legendary Buick Regal T-Type and Grand National, this matched set of six top-feed injectors is an excellent upgrade for mildly modified street cars and performance builds that demand improved fuel control, consistent cylinder-to-cylinder fueling, and OEM-like drivability. Utilizing modern high impedance ball and seat injector technology, these injectors deliver outstanding idle quality, crisp throttle response, and exceptional tuning characteristics.
Each injector is individually serial numbered and precisely matched using Fuel Injector Clinic's stringent flow-matching process to within 1 percent. Every injector set includes a detailed flow sheet with individual injector results, ensuring unmatched consistency and providing tuners with the confidence needed for accurate ECU calibration. This kit includes USCAR injector pigtails (PGTUSC6), while optional Plug and Play adapter harnesses (PADPUtoJ6) are available separately for installations that require no cutting or soldering.
Fuel Injector Clinic utilizes brand-new injectors instead of remanufactured or core-based injectors, maximizing long-term reliability for high-performance applications. Because these injectors use a modern connector style, installation requires either the included pigtails or optional Plug and Play adapter harnesses to adapt the factory wiring harness.
Quick Specs
- Part Number: IS309-0525H
- Injector Flow Rate: 525cc/min
- Injector Quantity: 6
- High impedance (saturated) ball and seat injectors
- Top-feed injector design
- Includes USCAR injector pigtails (PGTUSC6)
- Optional Plug and Play adapter harnesses available (PADPUtoJ6)
- Precisely flow matched to within 1 percent
- Each injector individually serial numbered
- Detailed individual injector flow sheet included
- Flow tested at 43.5 PSI (3 Bar) using CF-16B calibration fluid at 90 degrees Fahrenheit
- Application-specific O-rings included
- Lifetime warranty against manufacturing defects
Features
- Designed specifically for turbocharged Buick Regal T-Type and Grand National applications
- 525cc high impedance injectors provide increased fueling capacity for modified street and performance vehicles
- Modern ball and seat injector technology delivers excellent linearity and precise fuel control
- Superior short pulse width control for smooth idle quality and outstanding drivability
- Flow matched to within 1 percent for exceptional cylinder-to-cylinder consistency
- Each injector is individually serial numbered with a detailed flow sheet included
- Includes USCAR injector pigtails for wiring conversion
- Optional Plug and Play adapter harnesses available for a no-cut installation
- Brand-new injectors eliminate the risks associated with remanufactured cores
- Application-specific O-rings included for proper installation
- Backed by Fuel Injector Clinic's lifetime warranty against manufacturing defects
Fitment
- 1983 Buick Regal T-Type
- 1984 Buick Regal T-Type
- 1985 Buick Regal T-Type
- 1986 Buick Regal T-Type
- 1984 Buick Grand National
- 1985 Buick Grand National
- 1986 Buick Grand National
- 1987 Buick Grand National
FAQs
Do these injectors require modifications to the factory wiring?
Yes. The IS309-0525H uses modern injector connectors that differ from the factory harness. The included USCAR pigtails can be soldered into the existing wiring, or optional PADPUtoJ6 Plug and Play adapter harnesses can be used for a no-cut, no-solder installation.
Why are these injectors flow matched?
Every Fuel Injector Clinic injector set is matched to within 1 percent and includes a detailed flow sheet. This tight matching helps ensure balanced cylinder fueling, easier tuning, improved engine performance, and excellent drivability.
Why Buy From Beefcake Racing?
Beefcake Racing proudly offers genuine Fuel Injector Clinic products backed by competitive pricing, fast shipping, and knowledgeable technical support. Whether you're restoring a classic turbo Buick or building a street or strip Grand National, our team can help you select the ideal injector size and supporting fuel system components for your combination.
Need help selecting the proper injector size for your Buick build?
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
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