Quick-Draw Cap and Oil Sample Valve System
Quick-Draw Cap System & Oil Sample Valve
Get reliable, hassle-free oil sampling with the Insane Diesel OilPort Cap System and Oil Sample Valve—designed for precision, cleanliness, and convenience.
Taking oil samples for analysis can be messy, inconsistent, and prone to contamination with conventional methods. Our solution eliminates those headaches so you get accurate, lab-quality samples without spills, mess, or the risk of external debris entering your system.
Option 1: Quick-Draw Cap System (Cap + Valve)
The Quick-Draw Cap System includes:
- Custom-Modified Filter Cap – We precision-drill and thread a 1/4" NPT port directly into your bypass oil filter housing cap.
- Oil Sample Valve – Permanently mounted with thread-lock for a secure, leak-resistant seal.
This system provides a dedicated sampling port right at your filter housing, making oil analysis quick, repeatable, and mess-free—every time.
*Not to be used with transmission kits. Permanent thread-lock (or similar sealant) and assembly required.
Option 2: Oil Sample Valve (Valve Only)
The Oil Sample Valve is available separately for customers who only need the valve itself to integrate with an existing setup, your own custom application, or with compatible Extreme3 and Extreme4 housings.
*Extreme3 or Extreme4 housings may already come with an oil sample port—contact us to verify.
USA SHIPPING:
We may occasionally use a different shipping carrier than the one selected at checkout to improve delivery speed, protect fragile items, or help reduce overall shipping and handling costs, including packaging and processing fees
INTERNATIONAL SHIPPING:
International shipping costs are calculated at checkout; however, these charges do not include any additional customs duties, taxes, brokerage, or tariff fees that may be applied by your country upon import. These fees are not controlled by us and can vary widely based on your location and local regulations.
CANADA: For an estimate of what duty and taxes will be, visit this site here:
https://www.cbsa-asfc.gc.ca/travel-voyage/dte-acl/est-cal-eng.html
OTHER COUNTRIES: Please search for your government's "estimated duty and taxes" calculator.
We strongly recommend that you contact your local customs office or postal service in advance to understand what import fees may apply before placing your order. This will help ensure a smooth delivery and avoid unexpected charges when your package arrives.
RETURN POLICIES
GENERAL RETURN POLICY:
Please review the installation guide or video before purchasing, and confirm the pressure and return port locations for your engine. We're happy to provide guidance if needed. Returns are not accepted for buyer’s remorse or if the kit doesn’t match your engine model, so please double-check compatibility before ordering. If you encounter any issues, contact us — we’re committed to finding a solution.
DAMAGED PRODUCT RETURNS:
All products are inspected before shipping. If your product arrives damaged, please report it with photos within 7 business days of delivery. Only unused, damaged items in their original condition are eligible for replacement or refund. If a product is confirmed to be defective or damaged, you can choose between a replacement or full refund after inspection.
CANCELLATIONS AND OTHER REFUND POLICIES:
In rare cases where a product qualifies for a return (outside of damage on arrival and within 30 days of delivery), a refund will be issued minus return shipping costs and the Shopify transaction fee (2.4%-2.5% + 30¢). Although we *may* offer free shipping during promotions, the original shipping cost will also be deducted from your refund.
Your satisfaction is important to us! If you have any questions or need assistance, please contact us at support@InsaneDiesel.com.