Replacing a GE Refrigerator Compressor? Lokring WG03A03038 – Reconnect Refrigerant Lines Without Soldering
The WG03A03038 is the genuine OEM 6MM × 4MM Lokring refrigerant line coupling required to reconnect refrigerant tubing during compressor replacement on GE, Profile, Monogram, Haier, and related refrigerators. In most GE-built refrigerators, the Lokring is the factory-specified method for joining copper refrigerant tubing without soldering — a press-fit mechanical coupling that creates a permanent, leak-free seal. When the compressor or refrigerant lines are disconnected, the original Lokring is destroyed and must be replaced with a new one. ⚡ The most widely used Lokring size across the GE lineup — covers 400+ models. Part WG03A03038 is the genuine OEM replacement that supersedes WR97X10033 and 6/4NRMS00 with no modification required.
❓ Is This the Right Part?
This is the correct fitting if ALL of the following are true:
- ✔ You are replacing the compressor or have disconnected a refrigerant line on a compatible GE, Profile, Monogram, or Haier refrigerator
- ✔ The connection point requires a 6MM × 4MM Lokring — confirm tube diameters at your specific connection before ordering
- ✔ You have access to Lokring press tooling with a 6MM jaw
- ✔ You are EPA-certified for refrigerant handling
- ✔ ONLY need is to re-seal the refrigerant line at the compressor or line junction — not a leak in the evaporator, condenser, or other sealed system component
Not sure? Send us your model number — we'll confirm the correct Lokring size before you order.
🔧 Common Situations Requiring This Part
- Compressor replacement in progress — refrigerant lines have been cut and must be rejoined
- Refrigerant leak at a line joint — existing Lokring has failed or was improperly installed
- Refrigerator not holding charge after a previous compressor service
- Refrigerant line disconnected during other sealed system work
- Previous Lokring damaged, crushed, or pressed with incorrect tooling
- New compressor installed but system won’t hold pressure — leak traced to line coupling
✔ If any of these situations apply, the WG03A03038 is the correct OEM coupling for the 6MM × 4MM connection point.
✔ Proper installation with calibrated Lokring press tooling restores a permanent, leak-free refrigerant seal.
📦 Part Details
- Part Number: WG03A03038
- Type: Compressor Lokring — 6MM × 4MM press-fit refrigerant line coupling, single-use, bimetal construction, no solder required
- Replaces: OEM direct-fit Lokring — supersedes WR97X10033, 6/4NRMS00 (no modification required)
- Brands: GE, GE Profile, Monogram, Haier, Café
The WG03A03038 (6MM × 4MM) covers one connection point — most compressor replacements require a second Lokring at the other line, typically the 8.5MM × 6MM (WG03A03126), 8MM × 7MM (WG03A03385), or 10.5MM × 8MM (WG03A03316). Confirm all required sizes before recovering refrigerant — once the lines are cut, you’re committed.
⚙️ Installation
Skill Level: ADVANCED — Professional use only. Disconnect power to the refrigerator and fully recover all refrigerant before cutting any lines — EPA certification required. Cut the refrigerant line cleanly and deburr the tube end; the tube must be perfectly round and free of burrs for the Lokring to seal. Slide the WG03A03038 onto the tube, insert the tube to full depth, and press with the correct 6MM Lokring jaw until the tool bottoms out — inspect the pressed ring for uniform compression. After recharging, leak-test all Lokring connections with an electronic leak detector before returning the unit to service. This is a single-use fitting — never attempt to reuse a pressed Lokring.
💡 Pro Tip
The WG03A03038 is the most common GE Lokring, but most compressor jobs need at least two sizes — one per connection point. Confirm which sizes apply to each line on your specific model before recovering refrigerant. Once you cut the line, you’re committed and a mid-job parts wait means a customer’s fridge stays down. Search your model number + “Lokring” or contact us and we’ll pull the full list of required fittings for your job.
🔗 Model Repair Pages
CFE28TP2MIS1, CFE28TP2MLS1, CSB42WP2NCS1, CSB42WP2NES1, CSB42WP2NFS1, CSB48WP2NCS1, CSB48WP2NES1, FUF17SMRDWW, FUF21SMRDWW, GFE26JMMTFES, GFE26JYMTFFS, GNE27JMMTFES, GNE27JYMTFFS, GSS25GGPECWW, GSS25GYPECFS, GTE16DTNDRWW, GTE17DTNDRWW, GTE18DTNDRWW, GTE21GSHFSS, GTE21GTHFWW, GWE23GYNHFS, GYE22GYNIFS, GZS22DMJWFES, HRB15N3BGS, HRF15N3AGAS, PYD22KYNJFS, PYE22PYNGFS, ZIF181NBRAII, ZIF301NBRAII, ZIR301NBRAII, ZIS420NNBII, ZIS480NNBII, ZISB420DNBII, ZISS420DNBSS, ZISS480DNBSS
✅Compatibility & Cross Reference
Not sure about your model number? Call 1-877-899-7278 and we’ll help you confirm. All brand names are the property of their respective owners and are used for compatibility reference only.
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