--- product_id: 47779479 title: "USA Run Capacitor 4 UF - 4 MFD 370 VAC Oval" brand: "onetrip parts" price: "€ 34.25" currency: EUR in_stock: true reviews_count: 8 category: "One Trip Parts" url: https://www.desertcart.sk/products/47779479-usa-run-capacitor-4-uf-4-mfd-370-vac-oval store_origin: SK region: Slovakia --- # 4 UF capacitance for stable HVAC performance Compact 1-1/4" x 2" oval design for easy install Precision-made in USA for unmatched quality USA Run Capacitor 4 UF - 4 MFD 370 VAC Oval **Brand:** onetrip parts **Price:** € 34.25 **Availability:** ✅ In Stock ## Summary > ⚡ Power your comfort with precision-made USA reliability! ## Quick Answers - **What is this?** USA Run Capacitor 4 UF - 4 MFD 370 VAC Oval by onetrip parts - **How much does it cost?** € 34.25 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/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 - • **Two-Year Peace of Mind:** Backed by OneTrip Parts’ exclusive 2-year limited replacement policy for worry-free use. - • **Space-Savvy Oval Design:** Slim 1-1/4" x 2" footprint fits most HVAC units without hassle. - • **Plug-and-Play Replacement:** Directly replaces multiple Rheem, Ruud, Weatherking models—no guesswork, no downtime. - • **Reliable HVAC Power Boost:** 4 microfarad capacitance ensures smooth motor starts and efficient operation. - • **Made in the USA, Built to Last:** Crafted with exact tolerances and premium aluminum for durability you can trust. ## Overview The USA Run Capacitor 4 UF - 4 MFD 370 VAC Oval is a high-quality, aluminum-encased capacitor designed for HVAC fan motors. Measuring a compact 1-1/4" x 2" oval base, it delivers stable 4 microfarad capacitance at 370 volts, making it a direct replacement for many furnace, air conditioner, and heat pump models. Manufactured in the USA to exacting standards, it ensures reliable performance and easy installation, backed by a 2-year limited replacement warranty. ## 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 | #167,402 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,495 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 | ## Images ![USA Run Capacitor 4 UF - 4 MFD 370 VAC Oval - Image 1](https://m.media-amazon.com/images/I/91ci+OWLCtL.jpg) ![USA Run Capacitor 4 UF - 4 MFD 370 VAC Oval - Image 2](https://m.media-amazon.com/images/I/819ixZi4W9L.jpg) ![USA Run Capacitor 4 UF - 4 MFD 370 VAC Oval - Image 3](https://m.media-amazon.com/images/I/51vxEPCo4BL.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.sk/products/47779479-usa-run-capacitor-4-uf-4-mfd-370-vac-oval](https://www.desertcart.sk/products/47779479-usa-run-capacitor-4-uf-4-mfd-370-vac-oval) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-08-05*