EGR Block Off Plate Oldsmobile 403 Corporate Engine 1977-1979 GM Brands USA

Oldsmobile 403 V8 Corporate Engine Protection During Rebuilds 1977-1979

Professional EGR valve protection designed specifically for the legendary Oldsmobile 403 V8 "Corporate Engine" used across GM's entire brand lineup from 1977-1979. Precision-machined aluminum block off plate with complete fastener kit. Perfect for classic GM restoration projects, corporate engine rebuilds, and collectors preserving automotive heritage.

Oldsmobile 403 Corporate Engine Compatibility

Fits: Oldsmobile 403 V8 Corporate Engine (1977-1979) - VIN Code "K"

GM Brand Applications:

• Pontiac: Firebird, Trans Am, Bonneville, Catalina, Grand Prix (1977-1979)
• Buick: Electra 225, LeSabre, Riviera (1977-1979)
• Oldsmobile: Delta 88, Cutlass, 98, Toronado (1977-1979)
• Cadillac: DeVille, Fleetwood (1977-1979)
• Specialty: GMC Motorhome (1977-1978), Marine, Industrial applications

Corporate Engine Details:

• Production: 1977-1979 (3-year GM corporate program)
• Displacement: 403 cubic inches (6.6 liters)
• VIN Code: "K" identifies 403 engine
• Strategy: GM's universal big-displacement solution across all brands

Product Features

• CNC Machined: 6061-T6 Aircraft Aluminum
• Corporate Engine Specific: Oldsmobile 403 V8 precision fit
• Multi-Brand Compatible: Works across Pontiac/Buick/Olds/Cadillac
• Complete Fastener Kit: 403 application-specific hardware included
• Heritage Focused: Perfect for corporate engine restoration projects
• Professional Finish: Machine polished
• Made in USA - Idaho manufactured

Technical Specifications

• Part Number: EGR-5010
• Application: Oldsmobile 403 V8 Corporate Engine
• Years: 1977-1979 GM Corporate Engine Program
• Engine Code: VIN Code "K" (403 cubic inch)
• Brands: Pontiac, Buick, Oldsmobile, Cadillac applications
• Hardware: Complete 403-specific fastener kit included
• Gasket Reference: NAPA ECHLIN Gasket PN 2-2521 (not included)
• Finish: Machine Polished

Installation Guidelines

1. Engine must be non-running (rebuild/storage only)
2. Verify Oldsmobile 403 V8 engine (VIN code "K")
3. Remove EGR valve and clean surface thoroughly
4. Apply sealant and install with included 403-specific fasteners
5. Torque to manufacturer specifications

Applications

• Oldsmobile 403 corporate engine rebuilds and machine work
• Classic GM restoration projects (all brands)
• Show and display engines (Pontiac/Buick/Olds/Cadillac)
• GMC Motorhome restorations
• Marine and industrial engine rebuilds

Frequently Asked Questions

Q: Will this fit my Pontiac Trans Am?
A: Yes, if your Trans Am has the Oldsmobile 403 V8 engine (VIN code "K"). The 403 was used across GM brands from 1977-1979.

Q: How do I know if I have an Oldsmobile 403 corporate engine?
A: Check your VIN for code "K" which identifies the 403. The engine was used across GM brands, not just Oldsmobile vehicles.

Q: What GM brands used the Oldsmobile 403?
A: Pontiac (Firebird, Trans Am), Buick (Electra 225, LeSabre), Oldsmobile (Delta 88, Cutlass), and Cadillac (DeVille, Fleetwood) all used the 403.

Q: Are fasteners included?
A: Yes! Kit includes all necessary fasteners specifically for the Oldsmobile 403 application.

Made in USA with manufacturing defects covered. Free shipping.