DL53420 Short Couple Driveshaft 53mm x 135mm 186.37 Series Length: 420mm

DL53420 Short Couple Driveshaft — 186.37 Series (53mm x 135mm), 420mm Length, 16.500" Flange to Flange

The DL53420 is a short-couple driveshaft assembly in the metric 186.37 Series, characterized by a 53mm tube outer diameter and a 135mm U-joint cross width. The overall assembly length is 420mm, with a flange-to-flange compressed measurement of 16.500". This series is commonly associated with DUKW amphibious vehicle applications and other specialized equipment using the 53mm x 135mm metric driveshaft standard. The assembly is factory balanced and shipped ready for installation.

Short-couple driveshafts in the 186.37 Series use an 8-hole flange face pattern at 150mm bolt circle, with one male pilot face and one female pilot face to ensure concentricity at both mounting ends. The 53mm tube OD and 135mm U-joint width define this as the 186.37 metric series designation, which correlates to the flange face OD of 186mm and the 37mm tube wall specification used in the European and military driveline standard. The flange-to-flange dimension of 16.500" (419.1mm) is the compressed installation length — measure the mounting distance between companion flanges in the vehicle before ordering, as short-couple driveshaft assemblies have limited or no slip range.

Specifications

• Part Number: DL53420
• Series: 186.37 (53mm x 135mm)
• Assembly Length: 420mm
• Flange to Flange: 16.500"
• CL to CL: Not specified
• Flange Pattern: 150mm x 8 holes, 12mm bolt diameter
• Pilot: One male, one female
• Application: DUKW and 53mm x 135mm metric driveshaft applications

Fitment & Installation Notes

Before installing the DL53420, verify the companion flange bolt circle matches 150mm with 8 holes at 12mm bolt diameter on both the driving and driven ends. The male/female pilot arrangement requires that one flange end has a male register and the other has a female bore — confirm which end of the assembly presents the male pilot faces the female companion flange in the vehicle. Short-couple assemblies in the 186.37 Series do not telescope; the 420mm length is fixed, and the flange-to-flange distance must match the measured installation gap within the assembly's tolerance.

The 186.37 metric driveshaft series is a European/military specification used on DUKW amphibious vehicles, certain heavy trucks, and specialized off-road equipment produced for European and international markets. The 53mm tube OD and 135mm cross width are distinctly different from SAE 1610 and 1710 series dimensions — these series are not interchangeable. Before ordering, confirm the equipment's driveline documentation specifies the 186.37 metric series or the 53mm x 135mm joint dimensions. The DL53420 assembly is dynamically balanced to minimize vibration at operating speed.

Verify the exact flange-to-flange distance in the vehicle using a caliper or tape measure with the chassis at ride height before committing to the DL53420 assembly length. A flanged short-couple driveshaft installed at the wrong length will induce operating-angle error and vibration. Explore related Short Couple Driveshaft assemblies including 1610 and 1710 SAE series short-couple configurations for heavy truck and commercial vehicle applications.