Our aftermarket manifolds are some of the highest quality replacements on the market!

If your vehicle's exhaust is getting loud and the exhaust noise is coming from under the hood or engine then you may need to fix a cracked exhaust manifold. Replacing a broken manifold is easiest with a direct replacement manifold that will fit correctly and bolt up to you original engine and exhaust system. This manifold is a direct fitting replacement.

This tubular style manifold has been designed to eliminate the faults of the original design.



  • Fits Rear Bank
  • Fits both Supercharged and Non Supercharged engines
  • Direct replacement
  • Replaces original manifolds that are cracked from thermal expansion and contraction
  • Strengthened and redesigned in the vulnerable areas of failure
  • Replaces OE Part # 24503920

Item Condition: New

WARNING:  This product can expose you to chemicals including Nickel (Metallic), which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser.

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Vehicle Fit

Year Make Model Description
1997-2005Buick LeSabre Buick LeSabre Rear Bank Exhaust Manifold V6 3.8L Dorman 674-568
1997-2005Buick Park Avenue Buick Park Avenue Rear Bank Exhaust Manifold V6 3.8L Dorman 674-568
1999Buick Riviera Buick Riviera Rear Bank Exhaust Manifold V6 3.8L Dorman 674-568
1997-1999Oldsmobile LSS Olds LSS Rear Bank Exhaust Manifold V6 3.8L Dorman 674-568
1997-2005Pontiac Bonneville Pontiac Bonneville Rear Bank Exhaust Manifold V6 3.8L Dorman 674-568

This part replaces:

  • Hollander 327-1816
  • Dorman 674-568
Part #: 1AEEM00370

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout

Brand #: 674-568