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Couplers & Adapters

Using a 2” straight extension, called a coupler, to extend the steering box, R&P shaft or the column shaft, can sometimes eliminate a universal joint. The coupler can be welded or pinned to the un-splined end of a shaft. The 1”- 48 and 1” DD couplers have a 1-1⁄4” hole that will accept either an adapter to reduce inside diameter to 3/4” smooth or another splined or 3/4” DD coupler. The coupler assembly would have to be pinned and/or welded together. Welding the coupler is acceptable because there are no moving parts to damage, and the coupler’s steel is less susceptible to heat damage from welding. Couplers are available in the same spline and Double D sizes as our universal joints. Couplers and adapters are available in steel and stainless steel only.

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9/16-36 X 3/4 Smooth Bore	9/16-17 X 3/4 Smooth Bore	5/8-36 Chrysler X 3/4 Smooth Bore
Part #: 311200	Part #: 310600	Part #: 312100
$21.55	$21.55	$21.55
Qty	Qty	Qty


3/4-48 X 3/4 Smooth Bore	13/16-36 X 1" Smooth Bore	17MM DD X 3/4 Smooth Bore
Part #: 313700	Part #: 314000	Part #: 314600
$21.55	$21.55	$21.55
Qty	Qty	Qty


1DD X 1-1/4 Smooth Bore	1-1/4 OD X 3/4 ID	1" OD X 3/4 ID
Part #: 315200	Part #: 358200	Part #: 358000
$29.54	$8.84	$8.84
Qty	Qty	Qty


1"48 X 1-1/4 Smooth Bore	11/16-40 X 3/4 Smooth Bore	3/4-30 X 3/4 Smooth Bore
Part #: 314300	Part #: 312800	Part #: 313100
$29.54	$21.55	$21.55
Qty	Qty	Qty

Couplers & Adapters

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