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Earls Adjustable Coolant Cross-Over Tube -16 AN x (2) -12 AN O-Ring Port Swivels

Adjustable Length Range - 6.8" to 10.5" (c/l to c/l of -12 O-Ring Port Swivels), Billet Aluminum w/ (2) O-ring seals. Ideal for use w/ LS0022ERL & Remote Mounted Electric Water Pump


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Earls Adjustable Coolant Cross-Over Tube simplifies the plumbing of a remote mounted electric water pump by eliminating T's, Y-Blocks, and extra hose ends. The design of this special cross-over tube allows adjustable length & can be used as a coolant inlet or outlet on your GM LS Engine. Features (1) -16 AN Male Flare & (2) -12 AN Male O-Ring Port Swivels. Billet aluminum construction w/ two O-ring seals & black anodized finish. The -12 AN O-ring port swivels eliminate adapters & provides a lower profile for extra clearance. This part can be combined with the block adapters (part # LS0022ERL), and a second style coolant cross-over (part # LS0035ERL) for a simple & clean plumbing solution when using a remote mounted electric water pump.


  • Adjustable Coolant Cross-Over Tube for Remote Mounted Electric Water Pump
  • Simplifies AN Plumbing by Eliminating T’s, Y-Blocks & Hose Ends
  • Billet Aluminum Construction w/ O-Ring Seals
  • Adjustable Length (c/l to c/l of -12 AN O-Ring Male Ports) 6.8” to 10.5”
  • Black Anodized Finish
  • (2) -12 AN Male O-Ring Port Ends & (1) -16 AN Male Flare
  • Can Be Used for Coolant Inlet or Outlet
  • Designed for GM LS Engines, but can be Used on Other Engines w/ Appropriate Block Adapters (i.e. Big Block Chevy, Small Block Chevy, Big Block Mopar, and Small Block Ford)
  • Ideal for Use w/ LS0022ERL (LS Block Adapters) & LS0035ERL (2nd Coolant Cross-over)
  • Similar in Design to LS0035ERL Except w/ -12 AN O-Ring Port Fittings (Eliminates the Need for ORB adapters – Low Profile for Extra Clearance)


Adapter AN Size ( C )16 AN MALE
Adapter Port Size ( B )1-1/16-12 (AN 12)
Adapter Port Size (A)1-1/16-12 (AN 12)
ApplicationGM LS Engines
Emission Code5
FinishAnodized Black
Fitting Centers6.8" to 10.5"
Material6061 Aluminim
Overall Length9.8" to 13.5"
Product TypeWater Pump Adapter
Part NumberLS0037ERL

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This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.


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