Parker 43 Series JIC 37° Flare Fittings
Parker's 43 Series JIC 37° flare fittings are best-in-class for horse trailer hydraulics thanks to precision machining and robust materials that deliver reliable high-pressure sealing in vibration-prone towing environments. They command a premium but provide long service life and consistent flare-seat integrity, which reduces downtime and long-term replacement costs compared with lower-cost adapters. Compared with crimp systems like Gates and ORB styles like Brennan, the 43 Series offers field-proven compatibility and easier visual leak inspection for trailers and PTO-driven systems.
37° tight seal
Rugged stainless
37° tight seal
Rugged stainless
Review Summary
"Long-term users praise the Parker 43 Series for consistent, leak-free JIC 37° flare connections, excellent machining and corrosion resistance. Some note the higher cost but consider it durable, professional-grade hardware."
Handshake-fit charm
37° JIC flare sealing for leak-resistant high-pressure connections.
Handshake-fit charm
37° JIC flare sealing for leak-resistant high-pressure connections.
Time-Saving Convenience
Skill Development & Mastery
Parker's 43 Series JIC 37° flare fittings are best-in-class for horse trailer hydraulics thanks to precision machining and robust materials that deliver reliable high-pressure sealing in vibration-prone towing environments. They command a premium but provide long service life and consistent flare-seat integrity, which reduces downtime and long-term replacement costs compared with lower-cost adapters. Compared with crimp systems like Gates and ORB styles like Brennan, the 43 Series offers field-proven compatibility and easier visual leak inspection for trailers and PTO-driven systems.
37° tight seal
Rugged stainless
Handshake-fit charm
37° JIC flare sealing for leak-resistant high-pressure connections.
Available in carbon steel, stainless steel and zinc-plated options for corrosion resistance.
37° tight seal
Rugged stainless
Handshake-fit charm
37° JIC flare sealing for leak-resistant high-pressure connections.
Available in carbon steel, stainless steel and zinc-plated options for corrosion resistance.
$10-60 CAD
Gates MegaCrimp G25 Hydraulic Adapters
Gates MegaCrimp G25 adapters are a market leader for fleet and shop-level hose assembly with high-throughput crimp compatibility and competitive pricing that lowers installed cost for horse trailer hydraulic lines. Their technical advantage is fast, repeatable crimped connections that reduce assembly time and inventory carrying costs versus threaded or flare-only systems, though they require proper crimp tooling for peak performance. Compared with Parker and Brennan fittings, Gates provides a cost-effective solution for high-volume repair shops and owners who prioritize quick, standardized hose assemblies.
Crimp-ready speed
High burst rating
Crimp-ready speed
High burst rating
Review Summary
"Users report reliable, repeatable crimps and strong leak-free joints with the Gates MegaCrimp G25 when correct tooling and procedures are used. A few buyers mention availability issues and the need for properly calibrated crimpers for consistent results."
Crimper's best friend
Designed for use with Gates MegaCrimp (G25) crimping equipment for consistent, factory-grade hose assemblies.
Crimper's best friend
Designed for use with Gates MegaCrimp (G25) crimping equipment for consistent, factory-grade hose assemblies.
Time-Saving Convenience
Eco-Friendly Living
Skill Development & Mastery
Gates MegaCrimp G25 adapters are a market leader for fleet and shop-level hose assembly with high-throughput crimp compatibility and competitive pricing that lowers installed cost for horse trailer hydraulic lines. Their technical advantage is fast, repeatable crimped connections that reduce assembly time and inventory carrying costs versus threaded or flare-only systems, though they require proper crimp tooling for peak performance. Compared with Parker and Brennan fittings, Gates provides a cost-effective solution for high-volume repair shops and owners who prioritize quick, standardized hose assemblies.
Crimp-ready speed
High burst rating
Crimper's best friend
Designed for use with Gates MegaCrimp (G25) crimping equipment for consistent, factory-grade hose assemblies.
High-strength steel construction with protective coatings suitable for trailer exposure.
Crimp-ready speed
High burst rating
Crimper's best friend
Designed for use with Gates MegaCrimp (G25) crimping equipment for consistent, factory-grade hose assemblies.
High-strength steel construction with protective coatings suitable for trailer exposure.
$15-120 CAD
Eaton Weatherhead Insta-Crimp NPT Fittings
Eaton Weatherhead Insta-Crimp NPT fittings combine broad compatibility with tapered thread sealing, making them a practical choice for on-trailer repairs and retrofit work where ease of assembly matters. Their strength is inventory simplicity and rapid field serviceability for horse trailer hydraulics, often lowering spare-part variety and labor costs versus specialty flare or ORB systems. While NPT can require sealant and careful torque to prevent leaks, Eaton's quality control and availability make them a durable, cost-conscious option compared to premium JIC or ORB fittings.
Instant install joy
NPT versatility
Instant install joy
NPT versatility
Review Summary
"Reviewers find Eaton/Weatherhead Insta-Crimp NPT fittings solid and easy to install with good thread sealing and longevity in trailer hydraulic service. A minority note careful thread prep and proper torque are required to avoid occasional leaks."
Field-friendly magician
Insta-Crimp design speeds hose assembly while maintaining rated burst pressures for mobile hydraulics.
Field-friendly magician
Insta-Crimp design speeds hose assembly while maintaining rated burst pressures for mobile hydraulics.
Time-Saving Convenience
Skill Development & Mastery
Eaton Weatherhead Insta-Crimp NPT fittings combine broad compatibility with tapered thread sealing, making them a practical choice for on-trailer repairs and retrofit work where ease of assembly matters. Their strength is inventory simplicity and rapid field serviceability for horse trailer hydraulics, often lowering spare-part variety and labor costs versus specialty flare or ORB systems. While NPT can require sealant and careful torque to prevent leaks, Eaton's quality control and availability make them a durable, cost-conscious option compared to premium JIC or ORB fittings.
Instant install joy
NPT versatility
Field-friendly magician
Insta-Crimp design speeds hose assembly while maintaining rated burst pressures for mobile hydraulics.
NPT threaded options permit easy connection to pipe fittings and plumbing commonly found on trailers.
Instant install joy
NPT versatility
Field-friendly magician
Insta-Crimp design speeds hose assembly while maintaining rated burst pressures for mobile hydraulics.
NPT threaded options permit easy connection to pipe fittings and plumbing commonly found on trailers.
$12-90 CAD
Princess Auto ProFlow Hydraulic JIC Adapters
Princess Auto's ProFlow JIC adapters offer strong value for DIY trailer owners and small operators needing reliable 37° flare connections at a lower price point, making them widely available for immediate repairs. They provide many of the practical benefits of JIC geometry (good pressure handling and interchangeability) with a budget-focused supply chain, though they may lack the traceability and corrosion-resistant alloys of premium brands. For horse trailer hydraulics, ProFlow is a financially sensible option when replacing components quickly without the higher capital outlay of OEM parts.
Shop-floor priced
JIC universal fit
Shop-floor priced
JIC universal fit
Review Summary
"Buyers appreciate Princess Auto ProFlow JIC adapters for their low cost and acceptable performance for light- to moderate-duty hydraulic use. Long-term users sometimes report cosmetic finish issues and occasional leakage under heavy or repeated cycling compared with premium brands."
DIYer's secret
Affordable JIC adapter range suitable for routine horse trailer hydraulic repairs and spares.
DIYer's secret
Affordable JIC adapter range suitable for routine horse trailer hydraulic repairs and spares.
Time-Saving Convenience
Skill Development & Mastery
Princess Auto's ProFlow JIC adapters offer strong value for DIY trailer owners and small operators needing reliable 37° flare connections at a lower price point, making them widely available for immediate repairs. They provide many of the practical benefits of JIC geometry (good pressure handling and interchangeability) with a budget-focused supply chain, though they may lack the traceability and corrosion-resistant alloys of premium brands. For horse trailer hydraulics, ProFlow is a financially sensible option when replacing components quickly without the higher capital outlay of OEM parts.
Shop-floor priced
JIC universal fit
DIYer's secret
Affordable JIC adapter range suitable for routine horse trailer hydraulic repairs and spares.
Steel construction with plated finishes that perform adequately with regular maintenance in trailer environments.
Shop-floor priced
JIC universal fit
DIYer's secret
Affordable JIC adapter range suitable for routine horse trailer hydraulic repairs and spares.
Steel construction with plated finishes that perform adequately with regular maintenance in trailer environments.
$8-70 CAD
Brennan Industries 6400 Series ORB Fittings
Brennan Industries' 6400 Series ORB (O-ring boss) fittings are engineered for leak-free, high-pressure hydraulic systems and are particularly well-suited to horse trailers where vibration and shock loading can compromise other connections. Their O-ring sealing philosophy gives a technical edge over flare and NPT threads by providing a positive, serviceable seal that minimizes maintenance and environmental contamination, making them a preferred choice for OEM and performance-upgrade applications. Although they carry a higher upfront cost than generic adapters, the reduction in downtime and hydraulic fluid loss often yields lower lifecycle costs compared with JIC or crimp-only solutions.
ORB leak-proof
High-pressure champ
ORB leak-proof
High-pressure champ
Review Summary
"Professionals praise Brennan Industries 6400 Series ORB fittings for precision machining, reliable sealing and long service life in high-pressure hydraulic systems. The only common drawbacks are higher price compared with commodity alternatives."
Racehorse tough
ORB (O-Ring Boss) sealing provides compact, leak-free high-pressure connections ideal for cylinders and valves.
Racehorse tough
ORB (O-Ring Boss) sealing provides compact, leak-free high-pressure connections ideal for cylinders and valves.
Time-Saving Convenience
Eco-Friendly Living
Brennan Industries' 6400 Series ORB (O-ring boss) fittings are engineered for leak-free, high-pressure hydraulic systems and are particularly well-suited to horse trailers where vibration and shock loading can compromise other connections. Their O-ring sealing philosophy gives a technical edge over flare and NPT threads by providing a positive, serviceable seal that minimizes maintenance and environmental contamination, making them a preferred choice for OEM and performance-upgrade applications. Although they carry a higher upfront cost than generic adapters, the reduction in downtime and hydraulic fluid loss often yields lower lifecycle costs compared with JIC or crimp-only solutions.
ORB leak-proof
High-pressure champ
Racehorse tough
ORB (O-Ring Boss) sealing provides compact, leak-free high-pressure connections ideal for cylinders and valves.
Available in stainless and carbon steel with tight tolerances for reliable performance in harsh trailer conditions.
ORB leak-proof
High-pressure champ
Racehorse tough
ORB (O-Ring Boss) sealing provides compact, leak-free high-pressure connections ideal for cylinders and valves.
Available in stainless and carbon steel with tight tolerances for reliable performance in harsh trailer conditions.
$25-180 CAD