Shop › TR250-TR6-Spitfire Air Filters Image 1 of 1 TR250-TR6-Spitfire Air Filters $15.00 Sold Out AC Delco Brand. TR250-TR6. Spitifre MK4-1500 Sold Out Added! AC Delco Brand. TR250-TR6. Spitifre MK4-1500 You Might Also Like 148875 $17.50 Overflow Bottles and Brackets from $1.00 Rubber Fuel Hose from $3.50 Air Deflectors, TR4-TR4A-TR250 from $0.25 Radiators, TR250-TR6 from $425.00