--- product_id: 62966800 title: "S-34 Gearcase Pressure Tester, Black" brand: "stevens instrument company" price: "1451 zł" currency: PLN in_stock: true reviews_count: 8 category: "Stevens Instrument Company" url: https://www.desertcart.pl/products/62966800-s-34-gearcase-pressure-tester-black store_origin: PL region: Poland --- # Compact 18.25 x 6.75 x 5 in size Precision 3/8-16 vent plug thread Lightweight 2.3 lbs for easy handling S-34 Gearcase Pressure Tester, Black **Brand:** stevens instrument company **Price:** 1451 zł **Availability:** ✅ In Stock ## Summary > 🛠️ Seal the deal on your gearcase maintenance with precision pressure testing! ## Quick Answers - **What is this?** S-34 Gearcase Pressure Tester, Black by stevens instrument company - **How much does it cost?** 1451 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/62966800-s-34-gearcase-pressure-tester-black) ## Best For - stevens instrument company enthusiasts ## Why This Product - Trusted stevens instrument company brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Universal Fit:** Standard 3/8-16 vent plug thread ensures compatibility with most gearcases. - • **Trusted by Pros:** Highly rated with 4.5 stars and proven reliability for long-term use. - • **Durable & Portable:** Lightweight 2.3 lbs design makes it easy to carry and use on the go. - • **Leak-proof Confidence:** Easily detect gearcase leaks with accurate pressure readings. - • **DIY Maintenance Essential:** Perfect for outboard and sterndrive gearcase testing during lube ops or repairs. ## Overview The S-34 Gearcase Pressure Tester by Stevens Instrument Company is a compact, lightweight tool designed for accurate pressure testing of outboard and sterndrive gearcases. Featuring a standard 3/8-16 vent plug thread, it helps detect leaks during lubrication or after repairs, ensuring your drives stay sealed and water-free. Trusted by DIYers and professionals alike, it offers reliable performance backed by strong customer reviews. ## Description Pressure test outboard and sterndrive gearcases with the S-34. Tests should be made during lube operations and following gearcase repairs. Simply pressurize and observe gauge for any leakage. Fitted with standard 3/8-16 vent plug thread. "http://67.139.33.138/Attachments/attachments/images/logo/720275.jpg" alt="Stevens Instrument" Review: The right tool for pressure testing outdrives - Replaced O rings in two Bravo One sterndrives this spring and was able to use this tester to pump the required air into the drives to pressure test them. Held pressure at 15 pounds for 24 hours. Drives sealed well and had no water in them when oil was drained for the season. Worked perfectly. Good investment for DIY outdrive maintenance. Review: Great - Great ## Features - Part number: S-34 - Package Weight: 1.043 kilograms - Oem equivalent part number: STVS34 - Package Dimensions: 45.974 L x 13.208 H x 17.018 W (centimeters) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B005GY9X7Q | | Best Sellers Rank | #1,232,917 in Automotive ( See Top 100 in Automotive ) #203 in Pressure & Vacuum Testers | | Brand | Stevens Instrument Company | | Customer Reviews | 4.5 4.5 out of 5 stars (61) | | Date First Available | August 11, 2011 | | Item Weight | 2.3 pounds | | Item model number | S-34 | | Manufacturer | Stevens Instrument Company | | Manufacturer Part Number | S-34 | | National Stock Number | 4910-01-132-9147 | | OEM Part Number | STVS34 | | Product Dimensions | 18.25 x 6.75 x 5 inches | ## Images ![S-34 Gearcase Pressure Tester, Black - Image 1](https://m.media-amazon.com/images/I/61f2fulHAFL.jpg) ![S-34 Gearcase Pressure Tester, Black - Image 2](https://m.media-amazon.com/images/I/31E3ZzD9R+L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ The right tool for pressure testing outdrives *by J***D on October 24, 2019* Replaced O rings in two Bravo One sterndrives this spring and was able to use this tester to pump the required air into the drives to pressure test them. Held pressure at 15 pounds for 24 hours. Drives sealed well and had no water in them when oil was drained for the season. Worked perfectly. Good investment for DIY outdrive maintenance. ### ⭐⭐⭐⭐⭐ Great *by T***N on March 22, 2025* Great ### ⭐⭐⭐⭐⭐ Five Stars *by A***R on June 1, 2018* Works great. Use it a few times a week ## Frequently Bought Together - Stevens Instrument Company S-34 Gearcase Pressure Tester, Black - Lower Unit Adapters fit Most Major Brands Outboard Motor(3/8 inch Swivel/10mm/8mm) DOES NOT FIT VOLVO PENTA --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/62966800-s-34-gearcase-pressure-tester-black](https://www.desertcart.pl/products/62966800-s-34-gearcase-pressure-tester-black) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-28*