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99 Items | 1 of 10 pages
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osco riser
3" exhaust outlet 0¡ down angle. For use in most inboard applications. Replaces MerCruiser #'s …

List price: $186.90

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$156.20

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osco manifolds
  • MC/ Marine Power 5.0/5.7L V8
  • Merc Ford 5.0/5.8L Stbd

List price: $212.10

Starting at:
$177.26

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osco 4" extension
4" extension for swivel exhaust. Use mounting kit 7087MK.

List price: $114.45

Your price:
$95.65

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List price: $9.98

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$8.34

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Sierra
  • Sierra 18-2949 Exhaust Manifold Gasket

List price: $22.49

Your price:
$19.99

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osco end plate
End Plate with water fitting. Replaces MerCruiser #60252. Use mounting kit 60252MK.

List price: $27.83

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$23.26

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osco manifold
Fits 265 283 305 307 327 350 and 400 cu. in. GM small block V8 engines. Fits both sides of engine. …

List price: $220.50

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$184.28

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OMC Sterndrive/ Cobra Manifolds
  • Sierra 18-1902 Manifold
  • Sierra 18-1921 Manifold, Elbow
  • Sierra 18-1903 Manifold

List price: $239.00

Starting at:
$202.99

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Mercruiser Manifolds
  • Sierra 18-1962 Manifold
  • Sierra 18-1958 Manifold (Port Only)

List price: $454.00

Starting at:
$389.99

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osco manifold
Fits 396 427 and 454 cu. in GM big block engines. Fits both sides of engine. Use mounting kit …

List price: $220.50

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$184.28

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99 Items | 1 of 10 pages
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