Amazon Secure Payment System Continue shopping “Idle Adjustment Knob & Retaining Ring – 9.9 & 15 hp – 1974 to 1985 – Johnson Evinrude – OMC 387272” has been added to your cart. Product Price Quantity Subtotal × Five Oceans Deck/Masthead Navigation Light - BC 2068-M2 $54.01 Five Oceans Deck/Masthead Navigation Light - BC 2068-M2 quantity $54.01 × OEM Evinrude Johnson Impeller with Key 0434424 $16.74 OEM Evinrude Johnson Impeller with Key 0434424 quantity $16.74 × Idle Adjustment Knob & Retaining Ring - 9.9 & 15 hp - 1974 to 1985 - Johnson Evinrude - OMC 387272 $25.82 Idle Adjustment Knob & Retaining Ring - 9.9 & 15 hp - 1974 to 1985 - Johnson Evinrude - OMC 387272 quantity $25.82 Coupon: Apply coupon Update cart Cart totals Subtotal $96.57 Total $96.57 Proceed to checkout