DYNATECH HEADER COLLECTOR SLIP-ON 2 1/8" PRIMARY TUBES 4" COLLECTOR 12 " LONG HI TEMP SILVER CERAMIC COATED Bungs welded on for Evac tubes / O2 sensors Includes Threaded Evac Tubes and Plugs if you do not want to use them Includes U Tab Kits to weld on to your header tubes if yours don't have them or don't use this style 2.125” primary tube diameter 4.00” collector diameter 12" total length Ceramic Coated Tabs welded on Dynatech High-Flow Slip On Collectors are designed with maximum exhaust flow in mind. With a High-Flow long transition area, these collectors maximize flow to help you get the most out of your exhaust system. Comes standard Ceramic Coated inside and out. Designed with a unique Pan E-Vac / O2 Sensor bung. The bung installed in the collector has 18 mm threads, common to most O2 Sensors. For users that want to use a Pan E-Vac system, the kit comes with a fitting that adapts the 18 mm bung to “ pipe thread, common to most Pan E-Vac fittings. U-Tabs are already installed on the collectors for an easy bolt on to any Dynatech Header with no welding required. Extra U-Tabs and hardware are also included for installation on header without U-Tabs installed - See more at: https://www.afcodynapro.com/DYNATECH/1272261398#sthash.6Mp0YLaX.dpuf Dynatech High-Flow Slip On Collectors are designed with maximum exhaust flow in mind. With a High-Flow long transition area, these collectors maximize flow to help you get the most out of your exhaust system. Comes standard Ceramic Coated inside and out. Designed with a unique Pan E-Vac / O2 Sensor bung. The bung installed in the collector has 18 mm threads, common to most O2 Sensors. For users that want to use a Pan E-Vac system, the kit comes with a fitting that adapts the 18 mm bung to “ pipe thread, common to most Pan E-Vac fittings. U-Tabs are already installed on the collectors for an easy bolt on to any Dynatech Header with no welding required. Extra U-Tabs and hardware are also included for installation on header without U-Tabs installed. - See more at: https://www.afcodynapro.com/store/brand/DYNATECH-131/market/DragRacing-15?search_api_views_fulltext= page=4#sthash.p0yfPc1q.dpuf Formed long transition 4 into 1 design for maximum power Includes threaded adaptor and plug Unique 18mm bung is placed in the ideal location for optimum vacuum for the Pan E-Vac system or allows fitting an oxygen sensor for air/ fuel meter Jig located U-tabs at 180 for bolt-on mounting Hi-temp silver ceramic coating inside and out PART # 83-61236 83-612402C 1 SINGLE COLLECTOR Dynatech High-Flow Slip On Collectors are designed with maximum exhaust flow in mind. With a High-Flow long transition area, these collectors maximize flow to help you get the most out of your exhaust system. Comes standard Ceramic Coated inside and out. Designed with a unique Pan E-Vac / O2 Sensor bung. The bung installed in the collector has 18 mm threads, common to most O2 Sensors. For users that want to use a Pan E-Vac system, the kit comes with a fitting that adapts the 18 mm bung to “ pipe thread, common to most Pan E-Vac fittings. U-Tabs are already installed on the collectors for an easy bolt on to any Dynatech Header with no welding required. Extra U-Tabs and hardware are also included for installation on header without U-Tabs installed - See more at: https://www.afcodynapro.com/DYNATECH/1272261398#sthash.6Mp0YLaX.dpuf NEW with a couple small dents in collector PA Residents Pay 6% Sales Tax FREE SHIPPING TO ANYWHERE IN THE UNITED STATES 30 Day Return Policy If you are not 100% satisfied, you may return your product for a refund less shipping charges. Please wait until all your auctions end before proceeding to checkout to take advantage of any additional item shipping discount. Shipping information We ship most of our items worldwide. We do ship to US P.O. Boxes and APO's. Please have a valid shipping address listed. Normally we ship items out three times a week. During busy times we ship more frequently. Local pick up is not available. We do offer combined shipping on some items. Please wait until all your auctions end or your purchases are made before proceeding to checkout to take advantage of multiple item shipping discount. You have 7 days from the end of the first purchase to add additional items to your order. International Buyers – Please Note: Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying. Return policy If you are not satisfied with your purchase please return the item for a full refund minus the shipping charges. You have 30 days from the date of delivery to notify us of your return and ship it back to us. Merchandise must be unworn (Tried on only for fit and sizing) and in the original packaging. Please include the original packing slip, if available, so we can properly credit your original form of payment. If you are not satisfied, please let us know before leaving feedback. When you receive your order, please take a moment to leave us feedback. WE HAVE MORE LETHAL DEALS IN OUR STORE!!