1. Manifolds & Headers Offered
  2. sku: 7255558852893753
  3. CADILLAC 327.GM6U46

CADILLAC 327.GM6U46 Flathead Exhaust Manifold Crossover 346

fits make: Cadillac. year: 1937-48–1946.

327.gm6u46 Cadillac 1937-48 Flathead 346 Exhaust Manifold Crossover 1943 1944 1945 1946

( Mounting Style: Bolt-on ), ( Genuine Oem: Yes ), ( Material: Cast Iron ), ( Type: Exhaust Manifold ), ( Ipn: 327.gm6u46 ), ( Manufacturer Warranty: 90 Day ), ( Country/region Of Manufacture: United States )

Review CADILLAC Flathead 346 Exhaust Manifold Crossover fits 327 1937-48–1946

Cadillac 327 GM6U46 Flathead Exhaust Manifold Crossover (1937-1948)

The Cadillac 327 GM6U46 Flathead Exhaust Manifold Crossover is an essential component for the restoration or replacement of the exhaust system in Cadillac vehicles manufactured between 1937 and 1948. This product is designed specifically for Cadillac's flathead 346 engines, making it a valuable addition for enthusiasts and collectors who pride themselves on maintaining the authenticity and performance of their classic Cadillac automobiles.

This exhaust manifold crossover is meticulously crafted from high-quality materials, ensuring durability and reliability. The design of the crossover is based on the original factory-issued part, which guarantees a perfect fit and seamless integration into the existing exhaust system. The crossover's primary function is to connect the exhaust ports from each cylinder bank, allowing the gases to flow through the exhaust system and eventually exit the vehicle.

The Cadillac 327 GM6U46 Flathead Exhaust Manifold Crossover is compatible with the following model years: 1937, 1938, 1939, 1940, 1943, 1944, and 1945, 1946. This extensive coverage makes it a versatile option for Cadillac enthusiasts with a wide range of classic vehicles.

Installing this exhaust manifold crossover is a straightforward process, making it an excellent choice for DIY enthusiasts. However, for those who prefer a professional touch, it can also be installed by a certified mechanic to ensure optimal performance and safety. Regardless of the installation method, the Cadillac 327 GM6U46 Flathead Exhaust Manifold Crossover is an essential upgrade for any Cadillac flathead 346 engine vehicle from the specified model years.

In summary, the Cadillac 327 GM6U46 Flathead Exhaust Manifold Crossover is an authentic, high-quality part designed for Cadillac vehicles manufactured between 1937 and 1948. Its compatibility with flathead 346 engines and extensive coverage of model years make it an indispensable tool for those seeking to restore or maintain the performance and aesthetic appeal of their classic Cadillac automobiles.

The Cadillac 327.GM6U46 flathead 346 exhaust manifold crossover, produced between 1937 and 1948, is an essential component of the classic Cadillac flathead V8 engine. Let's discuss the pros and cons of buying this exhaust manifold crossover for your restoration project or performance build.

Pros:

1. Authenticity and Historical Value: These exhaust manifolds are original components from classic Cadillac vehicles, adding historical value and authenticity to your restoration project.

2. Availability: Compared to some other rare or obsolete parts, these exhaust manifolds are relatively easier to find on the aftermarket, which makes them an accessible choice for enthusiasts.

3. Fitment: These exhaust manifolds are designed to fit the Cadillac flathead V8 engine, ensuring a precise fit and proper function.

4. Affordability: Relatively speaking, these exhaust manifolds are often more affordable than custom or high-performance alternatives, making them a cost-effective option for many enthusiasts.

Cons:

1. Condition: Original exhaust manifolds, especially those from older vehicles, may have imperfections, cracks, or other signs of wear. These issues could potentially lead to leaks or reduced performance.

2. Compatibility with Modern Technology: If you're planning to use modern fuel injection systems or other advanced engine technologies, these exhaust manifolds may not be compatible, requiring additional modifications or custom solutions.

3. Performance: Original exhaust manifolds may not offer the same level of performance as modern high-performance alternatives, which could be a consideration for enthusiasts seeking maximum power output.

Ending Conclusion:

The Cadillac 327.GM6U46 flathead 346 exhaust manifold crossover offers a balance between historical authenticity, availability, and affordability. While they may have imperfections or offer less performance than modern alternatives, these exhaust manifolds are a popular choice for classic Cadillac restorations due to their fitment, availability, and historical value.

Recommendation:

If you're looking to maintain the historical authenticity of your classic Cadillac and prioritize fitment, availability, and affordability, then the Cadillac 327.GM6U46 flathead 346 exhaust manifold crossover is an excellent choice for your restoration project or performance build. However, if you're seeking maximum performance or modern technology compatibility, you may want to consider alternative exhaust manifold options.

specifications maniheader:

  • for makes: Cadillac
  • for years: 1937-48-1946
  • mounting style: Bolt-on
  • genuine oem: Yes
  • material: Cast Iron
  • type: Exhaust Manifold
  • interchange part number: 327.GM6U46
  • manufacturer warranty: 90 Day
  • country/region of manufacture: United States

returns maniheader:

  • policy: No Returns

offer maniheader:

  • quantity: 1
  • availability: In Stock
  • options: Ship-to-home
  • sold: 0
  • started: August 3, 2025

seller maniheader:

  • rating: 100.0%
  • # reviews: 2958

shipping maniheader:

  • transit: 9-15 Days
  • class: Economy
  • carrier: UPS
  • service: UPS Ground Saver
  • cost: $24.00
  • type: Calculated

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general maniheader:

  • condition: Used
  • Car Truck Parts Accessories > Exhaust Emission Systems > Manifolds Headers
for makes: cadillac, for years: 1937-48-1946, mounting style: bolt-on, genuine oem: yes, type: exhaust manifold, manufacturer warranty: 90 day, country/region of manufacture: united states,
category: auto parts > car truck parts accessories > exhaust emission systems > manifolds headers, material: cast iron, sku: 7255558852893753,

Cadillac Is Similar To:

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2 offers $58.00–$125.00 USD
  • Offer #1: $125.00 price + $25.00 delivery = $150.00* total. ANYTHING LISTED AS A CORE WILL NOT HAVE A FULL WARRANTY.+$25.00 shipping
  • Offer #2: $58.00 price + $32.81 delivery = $90.81* total. Looks to be in very nice original condition. OEM exhaust manifold crossover for 1937-48 Cadillac 346 flathead engine.+$32.81 shipping