The Midland Haldex KN30200X is an emergency relay valve designed for pre-121 trailers, converter dollies, and exempt trailers. This non-charging valve features a 3/8" service inlet, 3/8" emergency inlet, four 3/8" delivery ports, and a 1/2" auxiliary reservoir port, with the reservoir port plugged. Crack pressure is rated at 4.5 plus or minus 1 PSI. OEM reference number N4301BA. Also cross-referenced as KN30200, KN30200N, 110338, 110338X, A71891, A71892, and numerous additional interchange numbers. If you need to confirm fitment for your specific trailer or dolly configuration, call us at Pro Gear and Transmission.
Common cross-references for KN30200X include: 065449, 065450, 065451, 065452, 102168, 102169, 109036, 109049, 109053, 109054, 110267, 110268, 110338, 110338X, A71891, A71891X, A71892, AF71891, AF71892, N4301AB, N4301AC, N4301B, N4301BA, KN30200, KN30200N, PP03506, PPA044, SA110338, and ESL110338X, among others. Call Pro Gear and Transmission to verify the correct part for your trailer or dolly application.
A refundable core charge of $50.40 applies to this item and will be collected at checkout. The core charge is refunded upon receipt of your returned core, subject to its condition; customer is responsible for return shipping. Call us at (877) 776-4600 for details.
Features
Non-charging emergency relay valve configuration
3/8" service inlet and 3/8" emergency inlet
Four 3/8" delivery ports for multi-circuit brake systems
1/2" auxiliary reservoir port; main reservoir port plugged
Crack pressure: 4.5 plus or minus 1 PSI
Suitable for pre-121 trailers, converter dollies, and exempt trailers
Tech Specs
- Service Inlet: 3/8"
- Emergency Inlet: 3/8"
- Delivery (4): 3/8"
- Auxiliary Reservoir: 1/2"
- Reservoir: Plugged
- Crack Pressure: 4.5 +/- 1 PSI
- Remarks: Non-Charging
- OEM Part Number: N4301BA
- Core Group: 225
Additional Information
Repair kit: use part number RN10HL.Common cross-references for KN30200X include: 065449, 065450, 065451, 065452, 102168, 102169, 109036, 109049, 109053, 109054, 110267, 110268, 110338, 110338X, A71891, A71891X, A71892, AF71891, AF71892, N4301AB, N4301AC, N4301B, N4301BA, KN30200, KN30200N, PP03506, PPA044, SA110338, and ESL110338X, among others. Call Pro Gear and Transmission to verify the correct part for your trailer or dolly application.
