Brand new castings of the original 1970, 1971, 1972 W30 exhaust manifolds W and Z. They were also used on 1969 big blocks, the only difference is that in 1969 the left manifold had a heat riser. Highly detailed for show quality restorations. LH manifold "W", part #402295. RH manifold "Z", part #402294. Will fit Oldsmobile big block 400, 425 and 455 A body cars 1965-1972.


  • Satisfaction guaranteed. All returns and exchanges are accepted within 30 days; no questions asked. The part must meet the following requirements:​

    • Part is unused

    • Part is unaltered

    • Part is in original finish

    • Part to be shipped back with original packaging 

    ​We must be notified about the return so we can ensure a proper return/exchange process. We will send a call tag or return label via email. Shipping charges cannot be refunded, and customer pays return shipping.

    Returns are subject to restocking fees if not returned in original packaging or deemed poorly repackaged. Any and all fees and duties associated with your purchase, are your responsibily.