ALM Replacement Challenge, B&Q, Challenge Xtreme, Einhell, Makita, McCulloch, Qualcast, Ryobi, Sovereign, Webb, Universal petrol brush cutters, chain saws, garden vacuums, grass trimmers spark plug Compares to Autolite 2974, 2984, XST2974 Bosch WSR6F Brisk PR15Y, PR17YC Champion RCJ6Y, RCJ7Y, stk 852 Denso W20MP-U, W22MPR-U, stk 6023 General Motors 5613726 Iskra FSC75CPR Motorcraft A22NX, stk 107 NGK BPMR6A, BPMR7A, stk 107 Torch L6RTC, L7RTC, L8RTC, L8RTF Note ALM RCJ7Y is printed with ALM 7 on the spark plug