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  • BBK Power Plus Series 58mm Twin Throttle Body for GM 305 and 350 Engines – Fits 1989-1992 Chevrolet Corvette and Pontiac Firebird
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BBK Power Plus Series 58mm Twin Throttle Body for GM 305 and 350 Engines – Fits 1989-1992 Chevrolet Corvette and Pontiac Firebird
BBK Power Plus Series 58mm Twin Throttle Body for GM 305 and 350 Engines – Fits 1989-1992 Chevrolet Corvette and Pontiac Firebird
BBK Power Plus Series 58mm Twin Throttle Body for GM 305 and 350 Engines – Fits 1989-1992 Chevrolet Corvette and Pontiac Firebird
BBK Power Plus Series 58mm Twin Throttle Body for GM 305 and 350 Engines – Fits 1989-1992 Chevrolet Corvette and Pontiac Firebird
BBK Power Plus Series 58mm Twin Throttle Body for GM 305 and 350 Engines – Fits 1989-1992 Chevrolet Corvette and Pontiac Firebird
BBK Power Plus Series 58mm Twin Throttle Body for GM 305 and 350 Engines – Fits 1989-1992 Chevrolet Corvette and Pontiac Firebird
BBK Power Plus Series 58mm Twin Throttle Body for GM 305 and 350 Engines – Fits 1989-1992 Chevrolet Corvette and Pontiac Firebird
BBK Power Plus Series 58mm Twin Throttle Body for GM 305 and 350 Engines – Fits 1989-1992 Chevrolet Corvette and Pontiac Firebird
BBK Power Plus Series 58mm Twin Throttle Body for GM 305 and 350 Engines – Fits 1989-1992 Chevrolet Corvette and Pontiac Firebird
BBK Power Plus Series 58mm Twin Throttle Body for GM 305 and 350 Engines – Fits 1989-1992 Chevrolet Corvette and Pontiac Firebird
Load image into Gallery viewer, BBK Power Plus Series 58mm Twin Throttle Body for GM 305 and 350 Engines – Fits 1989-1992 Chevrolet Corvette and Pontiac Firebird
Load image into Gallery viewer, BBK Power Plus Series 58mm Twin Throttle Body for GM 305 and 350 Engines – Fits 1989-1992 Chevrolet Corvette and Pontiac Firebird
Load image into Gallery viewer, BBK Power Plus Series 58mm Twin Throttle Body for GM 305 and 350 Engines – Fits 1989-1992 Chevrolet Corvette and Pontiac Firebird
Load image into Gallery viewer, BBK Power Plus Series 58mm Twin Throttle Body for GM 305 and 350 Engines – Fits 1989-1992 Chevrolet Corvette and Pontiac Firebird
Load image into Gallery viewer, BBK Power Plus Series 58mm Twin Throttle Body for GM 305 and 350 Engines – Fits 1989-1992 Chevrolet Corvette and Pontiac Firebird
Load image into Gallery viewer, BBK Power Plus Series 58mm Twin Throttle Body for GM 305 and 350 Engines – Fits 1989-1992 Chevrolet Corvette and Pontiac Firebird
Load image into Gallery viewer, BBK Power Plus Series 58mm Twin Throttle Body for GM 305 and 350 Engines – Fits 1989-1992 Chevrolet Corvette and Pontiac Firebird
Load image into Gallery viewer, BBK Power Plus Series 58mm Twin Throttle Body for GM 305 and 350 Engines – Fits 1989-1992 Chevrolet Corvette and Pontiac Firebird
Load image into Gallery viewer, BBK Power Plus Series 58mm Twin Throttle Body for GM 305 and 350 Engines – Fits 1989-1992 Chevrolet Corvette and Pontiac Firebird
Load image into Gallery viewer, BBK Power Plus Series 58mm Twin Throttle Body for GM 305 and 350 Engines – Fits 1989-1992 Chevrolet Corvette and Pontiac Firebird

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BBK Power Plus Series 58mm Twin Throttle Body for GM 305 and 350 Engines – Fits 1989-1992 Chevrolet Corvette and Pontiac Firebird

BBK
bbk1539
In stock
$459.99 $439.99
Upgrade your vehicle's airflow with the BBK Power Plus Series 58mm Twin Throttle Body, engineered specifically...
$439.99
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BBK Power Plus Series Twin 58mm Throttle Body for GM LT1 Engines | Fits 1992-1993 Chevrolet Corvette, Firebird, and Camaro
BBK Power Plus Series Twin 58mm Throttle Body for GM LT1 Engines | Fits 1992-1993 Chevrolet Corvette, Firebird, and Camaro
$459.99 $439.99
BBK Power Plus Series 58mm Twin Throttle Body for GM 305 and 350 Engines – Fits 1989-1992 Chevrolet Corvette and Pontiac Firebird
Description

Upgrade your vehicle's airflow with the BBK Power Plus Series 58mm Twin Throttle Body, engineered specifically for GM 305 and 350 engines from 1989 to 1992, including Chevrolet Corvettes and Pontiac Firebirds. Crafted from high-quality 356 aluminum, this throttle body is CNC machined for precise fitment and enhanced performance. Its twin 58mm design ensures increased airflow, leading to improved throttle response, horsepower, and torque without the need for an aftermarket tune. The OEM-style die-stamped throttle linkages, double sealed bearings, and O-ringed throttle shafts guarantee durability and smooth operation, making this a reliable upgrade for enthusiasts seeking immediate performance gains.

Features:

  • Twin 58mm design provides increased airflow for better throttle response and performance
  • Direct fit replacement for stock throttle bodies, ensuring OEM driveability
  • Made from CNC-machined 356 aluminum casting for high strength and durability
  • Includes all required gaskets and hardware for easy installation
  • No tuning required for optimal performance with stock vehicle calibration
  • Designed to work seamlessly with factory tune, preserving vehicle warranty
  • Made in the USA with strict quality standards

Fitment:
1989 Chevrolet Camaro Iroc-Z
1989 Chevrolet Camaro RS
1989 Chevrolet Corvette Base
1989 Pontiac Firebird Base
1989 Pontiac Firebird Formula
1989 Pontiac Firebird Trans Am
1989 Pontiac Firebird Trans Am GTA
1990 Chevrolet Camaro Iroc-Z
1990 Chevrolet Camaro RS
1990 Chevrolet Corvette Base
1990 Chevrolet Corvette ZR-1
1990 Pontiac Firebird Base
1990 Pontiac Firebird Formula
1990 Pontiac Firebird Trans Am
1990 Pontiac Firebird Trans Am GTA
1991 Chevrolet Camaro RS
1991 Chevrolet Camaro Z28
1991 Chevrolet Corvette Base
1991 Chevrolet Corvette ZR-1
1991 GMC Syclone Base
1991 Pontiac Firebird Base
1991 Pontiac Firebird Formula
1991 Pontiac Firebird Trans Am
1991 Pontiac Firebird Trans Am GTA
1992 Chevrolet Camaro RS
1992 Chevrolet Camaro RS Heritage Edition
1992 Chevrolet Camaro Z28
1992 Chevrolet Camaro Z28 Heritage Edition
1992 GMC Typhoon Base
1992 Pontiac Firebird Base
1992 Pontiac Firebird Formula
1992 Pontiac Firebird Trans Am
1992 Pontiac Firebird Trans Am GTA
1993 GMC Typhoon Base

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Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.

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Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.

Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.

Returns

Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.

Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.

Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.

Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).

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