--- product_id: 47779479 title: "USA Run Capacitor 4 UF - 4 MFD 370 VAC Oval" brand: "onetrip parts" price: "₩35031" currency: KRW in_stock: true reviews_count: 8 url: https://www.desertcart.kr/products/47779479-usa-run-capacitor-4-uf-4-mfd-370-vac-oval store_origin: KR region: South Korea --- # 4 UF capacitance for stable HVAC performance Compact 1.25" x 2" oval base for easy retrofit Precision-made in USA for unmatched reliability USA Run Capacitor 4 UF - 4 MFD 370 VAC Oval **Brand:** onetrip parts **Price:** ₩35031 **Availability:** ✅ In Stock ## Summary > ⚡ Power your HVAC with precision — made in the USA, built to last! ## Quick Answers - **What is this?** USA Run Capacitor 4 UF - 4 MFD 370 VAC Oval by onetrip parts - **How much does it cost?** ₩35031 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/47779479-usa-run-capacitor-4-uf-4-mfd-370-vac-oval) ## Best For - onetrip parts enthusiasts ## Why This Product - Trusted onetrip parts brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Made in the USA:** Crafted with exacting standards for durability and peace of mind in every install. - • **Broad Compatibility:** Direct replacement for top brands like Rheem, Ruud, and Weatherking—no guesswork needed. - • **HVAC-Grade Stability:** 4 microfarad capacitance ensures smooth motor operation and energy efficiency. - • **Space-Savvy Oval Design:** Slim 1-1/4" x 2" footprint fits seamlessly into tight HVAC panels without hassle. - • **Two-Year Limited Warranty:** Backed by OneTrip Parts’ exclusive replacement policy for worry-free performance. ## Overview The USA Run Capacitor 4 UF - 4 MFD 370 VAC Oval is a high-quality, aluminum-encased capacitor designed specifically for HVAC applications. Measuring a compact 1-1/4" x 2" oval base, it delivers reliable 4 microfarad capacitance at 370 volts, ensuring efficient motor function. Manufactured in the USA to exact tolerances, it serves as a direct replacement for numerous furnace, air conditioner, and heat pump models, including Rheem and Ruud. Supported by a two-year limited replacement warranty, this capacitor combines precision engineering with broad compatibility for professional-grade HVAC maintenance. ## Description This capacitor is the direct replacement for many furnaces, air conditioners, and heat pumps. This model will replace all 1-1/4" x 2" oval base capacitors rated at 4 UF (4 MFD) for 370 volt applications. This item is made in USA to exact tolerances. IMPORTANT NOTE ON CAPACITOR FITMENT: This is an oval capacitor which measures 1-1/4" x 2" at the base. Due to changes in capacitor materials and manufacturing over the years there have been slight variations in case diameter. This is especially true if replacing an older plastic capacitor with a new metal case capacitor. If your capacitor mounts through a hole bracket it may be necessary to enlarge the hole slightly with a file or grinder on some older units. This part is covered by the exclusive OneTrip Parts two year limited replacement policy. If this part fails within two years from date of purchase, return the defective part and a copy of the original invoice to the place of purchase for replacement. Contact the authorized OneTrip Parts dealer that you purchased the part from for details. Original equipment manufacturer's brand name(s) and part numbers are used for identification purposes only. This item is supplied by OneTrip Parts and meets or exceeds original equipment specifications. Review: Easy DIY - Perfect replacement for my old and failing furnace fan run capacitor. Took me under 5 minutes to switch it in. Saved about $120 in heating and AC service fees. Review: Amazing! This got my 22 year old furnace running again! - Product exactly as described! Highly recommend. ## Features - Capacitor Specifications: 4 UF - 4 MFD - 370 VAC Oval Fan Motor Capacitor designed for reliable performance in HVAC applications - Compact Dimensions: 1-1/4" X 2" Flat Oval Base Dimension with 1-5/8" Can Height Not Including Terminals for easy installation - Manufacturing Origin: Manufactured in USA to exact tolerances ensuring quality and precision - Wide Compatibility: Replaces Rheem Ruud Weatherking 43-25134-27, 43-20847-43, 43-20847-44, 43-100496-44, 43-100497-43, 800P405H37A, and All Other 4 UF 370 VAC Flat Oval Models - Direct Replacement Part: Serves as a direct replacement for many furnaces, air conditioners, and heat pumps requiring 4 UF 370 VAC oval capacitors ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B072DSFQQ7 | | Best Sellers Rank | #177,704 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,524 in Industrial Electrical Capacitors | | Brand | OneTrip Parts | | Brand Name | OneTrip Parts | | Capacitance | 4 microfarad | | Customer Reviews | 4.5 out of 5 stars 155 Reviews | | EU Spare Part Availability Duration | 2 years | | Item Shape | Oval | | Item Weight | 2.72 ounces | | Manufacturer | OneTrip Parts | | Material | Aluminum | | Material Type | Aluminum | | Maximum Voltage | 370 volts | | Model | D-04UF370A | | Mounting Type | Panel Mount | | Operating Voltage | 370 volts | | Part Number | D-04UF370A | | Shape | Oval | | UPC | 818742014236 | | Upper Temperature Rating | 85 °C | ## Product Details - **Brand:** OneTrip Parts - **Capacitance:** 4 microfarad - **Material:** Aluminum - **Operating Voltage:** 370 volts - **Shape:** Oval ## Images ![USA Run Capacitor 4 UF - 4 MFD 370 VAC Oval - Image 1](https://m.media-amazon.com/images/I/91ci+OWLCtL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Easy DIY *by D***S on July 6, 2025* Perfect replacement for my old and failing furnace fan run capacitor. Took me under 5 minutes to switch it in. Saved about $120 in heating and AC service fees. ### ⭐⭐⭐⭐⭐ Amazing! This got my 22 year old furnace running again! *by B***N on February 4, 2026* Product exactly as described! Highly recommend. ### ⭐⭐⭐⭐⭐ Perfect Capacitor *by S***N on March 31, 2025* Great price. Fast shipping. Measured up on delivery at 4.20uF so within 6% tolerance for this 4uF capacitor. --- ## 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.kr/products/47779479-usa-run-capacitor-4-uf-4-mfd-370-vac-oval](https://www.desertcart.kr/products/47779479-usa-run-capacitor-4-uf-4-mfd-370-vac-oval) --- *Product available on Desertcart South Korea* *Store origin: KR* *Last updated: 2026-09-19*