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Vibrant Exhaust Manifold Flange for GM LT1/L98/LB9 SM Block (Dport) - Sold in Pairs Vibrant VIB14331D
Vibrant Exhaust Manifold Flange for GM LT1/L98/LB9 SM Block (Dport) - Sold in Pairs Vibrant VIB14331D
Vibrant Exhaust Manifold Flange for GM LT1/L98/LB9 SM Block (Dport) - Sold in Pairs Vibrant VIB14331D
Vibrant Exhaust Manifold Flange for GM LT1/L98/LB9 SM Block (Dport) - Sold in Pairs Vibrant VIB14331D
Vibrant Exhaust Manifold Flange for GM LT1/L98/LB9 SM Block (Dport) - Sold in Pairs Vibrant VIB14331D
Vibrant Exhaust Manifold Flange for GM LT1/L98/LB9 SM Block (Dport) - Sold in Pairs Vibrant VIB14331D
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Vibrant Exhaust Manifold Flange for GM LT1/L98/LB9 SM Block (Dport) - Sold in Pairs

Vibrant
VIB14331D
690092154684
Flanges
1 Units In Stock - Ships Next Business Day
Fabrication, Flanges, Vibrant
$ 189.99 $ 151.99
$ 151.99

SKU: 14331D | UPC: 690092154684

Vibrant Exhaust Manifold Flange for GM LT1/L98/LB9 SM Block (Dport) - Sold in Pairs fits 1992-1997 Buick Chevrolet Pontiac

Vibrant Performance Exhaust Manifold Flanges deliver precise port matching for GM LT1 L98 LB9 small block engines with D-port heads. These flanges connect stock manifolds to custom headers or exhaust systems in vehicles like Corvettes Camaros Firebirds Impala SS Caprice Roadmasters from 1992 to 1997. Their design supports seamless welding to round tubing or Schedule 10 fittings for reliable flow and power gains. MPN 14331D.

Key Features

  • 304 Stainless Steel Construction: Resists corrosion and withstands extreme exhaust temperatures for lasting durability
  • D-Port Opening: Matches OEM LT1/L98/LB9 ports at 1.875 inch height by 1.380 inch width for unrestricted flow
  • 3/8 Inch Thickness: Heavy duty build eliminates warping and ensures flat mating surfaces under heat expansion
  • Weld Ready Design: Prepped for 1-7/8 inch OD standard wall tubing or Schedule 10 weld fittings on both sides
  • Sold in Pairs: Complete left and right side set uses stock GM bolt pattern for direct bolt-on manifold replacement

Product Notes

  • Sold as a matched pair for balanced exhaust setup
  • Inspect ports and surfaces before welding for best results
  • Packaged in protective sleeve to prevent shipping damage

Installation Notes

  • Professional installation recommended.
  • TIG weld preferred for stainless steel to avoid contamination
  • Bolts to OEM manifold locations with 2.5 inch bolt hole spacing

This Part Fits

Year Make Model Submodel
1994-1996 Buick Commercial Chassis Base
1994-1995 Buick Roadmaster Base
1996 Buick Roadmaster Collector's Edition
1994-1995 Buick Roadmaster Estate Wagon
1996 Buick Roadmaster Estate Wagon Collector's Edition
1994-1995 Buick Roadmaster Limited
1996 Buick Roadmaster Limited Collector's Edition
1994 Chevrolet Commercial Chassis Base
1993 Chevrolet Corvette 40th Anniversary Edition
1992-1996 Chevrolet Corvette Base
1996 Chevrolet Corvette Collector's Edition
1996 Chevrolet Corvette Grand Sport
1995 Chevrolet Corvette Indianapolis 500 Pace Car
1994-1996 Chevrolet Impala SS
1993 Chevrolet Camaro Indianapolis 500 Pace Car
1993-1997 Chevrolet Camaro Z28
1994-1996 Chevrolet Caprice Classic
1994 Chevrolet Caprice Classic LS
1993-1997 Pontiac Firebird Formula
1993-1997 Pontiac Firebird Trans Am
1994 Pontiac Firebird Trans Am GT

Why Choose Vibrant Performance?

  • Offers the largest selection of exhaust manifold flanges available
  • Builds components from premium 304 stainless steel for heat resistance
  • Engineers ports to match OEM dimensions for leak-free performance

Frequently Asked Questions

  • Q: Will this flange fit my LT1 Corvette or F-body Camaro/Firebird?
    A: Yes it bolts directly to D-port exhaust manifolds on 1992-1997 LT1-equipped GM small blocks in listed vehicles
  • Q: What material and thickness are used?
    A: T304 stainless steel with 0.375 inch thickness supports high-performance exhaust without distortion
  • Q: What warranty coverage applies?
    A: Vibrant Performance provides a limited lifetime warranty on manufacturing defects when installed correctly

Shipping & Handling

  • Method: UPS Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Protective sleeve 9 x 9 x 2 inches
  • Weight: 2.1 lbs

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