The Red Dot 70R2038S Straight Step-Up Splicer Fitting is designed to join two different hose sizes (8 × 10) in mobile HVAC systems. Because it uses a straight splicer design, it creates a clean, inline transition without adding elbows or changing hose routing.
This fitting uses steel construction, which improves strength and helps extend service life in high-pressure A/C systems. As a result, it performs well in trucks, buses, and off-highway equipment that operate in demanding environments.
In addition, the 70R2038S does not use threads or ports. Instead, it installs directly between hoses of different sizes. Therefore, it works well for hose repairs, system updates, and custom hose assemblies where a step-up connection is required.
Because this fitting appears across multiple aftermarket catalogs, technicians often rely on it as a trusted replacement part for mobile refrigeration service.
Product Specifications
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Red Dot Part Number: 70R2038S
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Red Dot Factory Number: RD-5-12026-0P
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Type: Straight
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Fitting Style: Splicer (Step-Up)
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Material: Steel
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Hose Size: 8 × 10
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Thread: N/A
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Port: N/A
Common Applications
This straight step-up splicer fitting is commonly used for:
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Mobile A/C refrigerant hose repair
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Inline hose size transitions
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Truck and bus HVAC systems
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Construction and agricultural equipment
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Custom refrigerant hose assemblies
As a result, it is suitable for both field repairs and new system builds.
Cross References / Interchange Numbers
This part commonly interchanges with:
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Air Source / MEI: 4483S
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Alliance: ABP N83 311794
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Truck Air / MEI: 08-3005BS
Additional aftermarket references include:
550-SB5015, SB6106, 605-2005, 35-S6106, PTAC4483S, FT32005, RDT70R2038S
Product Summary
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Configuration: Straight step-up splicer
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Material: Steel
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Hose Compatibility: 8 × 10
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Application: Mobile HVAC / A/C systems
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