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Upgrade the venting system on your GM LS engine with Earl’s Adjustable LS Steam Tube Vent Adapter Kit, designed to replace the rigid factory vent tubes for improved compatibility with aftermarket intakes and performance accessories. These O-ring sealed adapters convert to -3 or -4 AN plumbing, offering the most adjustable and lowest-profile solution available for LS engines. Engineered for both functionality and style, they provide a clean, professional look while remaining installation-friendly.
The kit is available in six configurations, including a dual outlet option that eliminates the need for a T-adapter, allowing for optimal routing for your application. Suitable for front-only or front/rear steam tube setups, these adapters ensure reliable venting and a neat engine bay appearance.
Features:
Adjustable design for optimal routing and low-profile installation
Converts to -3 or -4 AN plumbing for compatibility with aftermarket setups
Professional anodized black finish for durability and appearance
Can be used for front-only or front/rear applications
Installation-friendly design for easy fitment
Available in multiple kit options including dual outlet configuration
Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.
Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.
Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
