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Crossover Systems - Big Block Chevy

Crossover Kit For Supercharged BBC Engines - Holley 250 & 420
Your Price:
$460.99

Crossover Kit For Supercharged BBC Engines - Holley 250 & 420

520-250BMKW

  • Custom designed crossover kit.
  • Allows the use of a thermostat or a kit with no thermostat.
  • Starboard inlet available by special order.

Crossover Kit For Supercharged BBC Engines - Holley 250 & 420
Your Price:
$391.99

Crossover Kit For Supercharged BBC Engines - Holley 250 & 420

520-250BMKWO

  • Custom designed crossover kit.
  • Allows the use of a thermostat or a kit with no thermostat.
  • Starboard inlet available by special order.

Port Big Block Chevy Crossover with Bypass
Your Price:
$310.99

Port Big Block Chevy Crossover with Bypass

520-1521

  • Most commonly used in our crossover kits.
  • Integrated bypass allows a smooth push-on style connection aimed at thermostat area.

Starboard Big Block Chevy Crossover with Bypass
Your Price:
$310.99

Starboard Big Block Chevy Crossover with Bypass

520-1520

  • Most commonly used in our crossover kits.
  • Integrated bypass allows a smooth push-on style connection aimed at thermostat area.

B/B Crossover 1 1/4 " hose barb with bypass.
Your Price:
$210.99

B/B Crossover 1 1/4 " hose barb with bypass.

421-04-6210

B/B Crossover 1 1/4 " hose barb with bypass.1 1/4"hose barb fitting with bypass.. Polished water crossovers are designed to fit Chevy big block. Constructed from stainless steel with tight radius bends to clear our cast aluminum timing chain covers. Flanges are 1/4" to assure a good seal.

B/B Crossover 1 1/4" hose barb
Your Price:
$210.99

B/B Crossover 1 1/4" hose barb

421-04-6215

B/B Crossover 1 1/4" hose barb1 1/4" fitting without bypass.. Polished water crossovers are designed to fit Chevy big block. Constructed from stainless steel with tight radius bends to clear our cast aluminum timing chain covers. Flanges are 1/4" to assure a good seal.

B/B Crossover -16 AN fitting
Your Price:
$231.99

B/B Crossover -16 AN fitting

421-04-6205

B/B Crossover -16 AN fitting-16 AN fitting without bypass.. Polished water crossovers are designed to fit Chevy big block. Constructed from stainless steel with tight radius bends to clear our cast aluminum timing chain covers. Flanges are 1/4? to assure a good seal.

B/B Crossover -16 with bypass
Your Price:
$231.99

B/B Crossover -16 with bypass

421-04-6200

B/B Crossover -16 with bypass-16 fitting with bypass. Polished water crossovers are designed to fit Chevy big block. Constructed from stainless steel with tight radius bends to clear our cast aluminum timing chain covers. Flanges are 1/4" to assure a good seal.

Replacement Hose for Crossover Kits
Your Price:
$16.99

Replacement Hose for Crossover Kits

410-1506

This hose is a replacement hose for the one included in the 620-300100 Crossover Kit. 9" overall length on the long run, 4" overall length on the short run

Replacement Hose for Crossover Kits
Your Price:
$8.99

O-Ring Service Kit for Extreme Crossovers

625-4376

This kit replaces the O-Rings on Xtreme Series Crossovers.

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