A38818-1-5.38 Gearset | Meritor Rockwell AxleTech | H172 R5.38 | Genuine OEM

A38818-1 | Meritor-Rockwell-AxleTech H172 Gearset | 5.38 Ratio (43/8) | New Genuine (NOS)

New Genuine Meritor / Rockwell / AxleTech A38818-1 — Ring & pinion gearset for H172 axles. 5.38 ratio (43 ring / 8 pinion teeth) with 1.750" – 34 spline pinion. New old stock (NOS) – unused and in excellent condition. In stock and ready to ship from Discount Parts Exchange (DPX) in Mansfield, Ohio.

How to Calculate Gear Ratio: Divide the number of teeth on the ring gear by the number of teeth on the pinion gear (e.g., 43 ÷ 8 = 5.38). This is the standard method used by Dana Spicer / Meritor.

Call to confirm availability: 419-522-3320

Key Specifications

• Part Number: A38818-1 (replaced by A38776-9)
• Manufacturer: Meritor / Rockwell / AxleTech
• Type: Ring & Pinion Gearset
• Gear Ratio: 5.38 (43 ring / 8 pinion teeth)
• Ring Gear: 38818
• Pinion: 38819
• Pinion Spline: 1.750" – 34 spline
• Application: H172 differentials
• Condition: New Genuine (NOS)
• Warranty: Sold As-Is, No Warranty

Applications & Fitment

Compatible with Meritor-Rockwell-AxleTech H172 axle applications.

Important: Verify spline size (1.750"–34) and ratio/tooth count before installation. No hardware or pinion nut included.

What’s Included

• 1 × Ring Gear – 38818
• 1 × Pinion – 38819
• No hardware or pinion nut included

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Shipping / Location

• Ships from our Mansfield, Ohio warehouse (419-522-3320)
• Parcel or LTL options available based on packaging and weight
• Warehouse Bin Location: DPX_OH_BR549_MRA

Heavy-Duty Solutions — Built to Perform. Trusted to Last. Discount Parts Exchange (DPX).