Ignition Systems & Components for 2012 GMC Sierra 3500 HD
Find parts that fit
We need more information about your vehicle to confirm fit.
2012
GMC
Sierra 3500 HD
Shop by Popular Categories
SPONSOREDSPONSOREDSPONSOREDSPONSOREDSPONSOREDSPONSORED
6,000 Results
DRAGON FIRE PERFORMANCE Power Pack For 2008-2018 GM 5.3L 6.0L 6.2L 7.0L V8 LS2 (Fits: 2012 GMC Sierra 3500 HD)
DRAGON FIRE PERFORMANCE |100% NEW CERTIFIED PARTSBrand New: AIP Electronics$359.95Free shipping22 watchingNew 8PCS 12639701 Glow Plug Fit For LMM LML LBZ Silverado Sierra Duramax 6.6L (Fits: 2012 GMC Sierra 3500 HD)
Brand New: Factory/OEM$74.99Free shipping92 sold8Pcs Genuine 12639701 Glow Plugs For LMM LML LBZ Silverado Sierra Duramax 6.6L (Fits: 2012 GMC Sierra 3500 HD)
✅ Authenticity GuaranteeBrand New: Factory/OEM$59.99Free shipping96 sold8PCS 12639701 Glow Plug Fit For LMM LML LBZ Silverado Sierra Duramax 6.6L (Fits: 2012 GMC Sierra 3500 HD)
✅ Authenticity GuaranteeBrand New: Factory/OEM$39.99Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
or Best OfferFree shipping92 soldGenuine 8PCS/Pack ACDelco Spark Plug Wire for GM Truck SUV Van V8 9748HH
Brand New: ACDelco$28.99or Best OfferFree shipping8PCS Genuine 41-110 Iridium Spark Plugs 12621258 For Chevy GMC 4.8L 5.3L 6.0L (Fits: 2012 GMC Sierra 3500 HD)
Brand New: Factory/OEM$32.99or Best OfferFree shipping157 sold8PCS OEM 12639701 Diesel Glow Plug For LMM LML LBZ Silverado Sierra Duramax 6.6L (Fits: 2012 GMC Sierra 3500 HD)
Brand New: Factory/OEM$51.99Free shipping38 sold8x 41-110 12621258 IRIDIUM SPARK PLUGS SP For CHEVROLET BUICK GMC 5.3L 6.0L 6.2L (Fits: 2012 GMC Sierra 3500 HD)
Brand New: OEM$17.99Free shippingOnly 1 left!Genuine 8Pc 41-110 Iridium Spark Plugs LS1 LS2 LS3 LS6 L99 12621258 5.3 6.0 6.2L (Fits: 2012 GMC Sierra 3500 HD)
Brand New: OE+$17.99or Best OfferFree shipping23 sold8Pcs Genuine 12639701 Glow Plugs For LMM LML LBZ Silverado Sierra Duramax 6.6L (Fits: 2012 GMC Sierra 3500 HD)
Brand New: Factory/OEM$60.99or Best OfferFree shippingGenuine 8Pc Iridium Spark Plugs LS1 LS2 LS3 LS6 L99 12621258 5.3 6.0 6.2L 41-110 (Fits: 2012 GMC Sierra 3500 HD)
Brand New$26.98Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
Was: $33.72or Best OfferFree shipping65 soldOEM AcDelco 8 PACK UF413 Ignition Coil + 41-110 Spark Plug + 9748UU Wire Fit GMC (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco$249.90or Best OfferFree shipping4 watching8PCS Square Ignition Coil & Spark Plug &Wires For Chevy Silverado 1500 Tahoe GMC (Fits: 2012 GMC Sierra 3500 HD)
Brand New: Unbranded$105.99Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
or Best OfferFree shipping2 watching8PCS Square Ignition Coil & Spark Plug &Wires For Chevy Silverado 1500 Tahoe GMC (Fits: 2012 GMC Sierra 3500 HD)
Brand New: Unbranded$105.3678 sold8pcs Diesel Glow Plugs For 06 07 Chevrolet Silverado GMC Sierra 6.6L 12639701 (Fits: 2012 GMC Sierra 3500 HD)
Brand New: Autodayplus$15.02Was: $20.35Free shipping82 sold2007-2013 GM SILVERADO TAHOE YUKON IGNITION LOCK CYLINDER OEM NEW 15794826 (Fits: 2012 GMC Sierra 3500 HD)
Brand New: General Motors$59.95$9.95 shipping63 sold8Pcs Genuine 12639701 Glow Plugs For LMM LML LBZ Silverado Sierra Duramax 6.6L (Fits: 2012 GMC Sierra 3500 HD)
✅ Authenticity GuaranteeBrand New: Factory/OEM$53.88Free shipping8 Diesel Glow Plugs For 2007-2016 Silverado 3500 HD Sierra 3500 HD 6.6L (Fits: 2012 GMC Sierra 3500 HD)
Brand New$16.12Was: $20.40or Best OfferFree shipping2007 -2013 Chevy Impala Lock Switch Cylinder Tumbler 2 Circle Plus Chip Key OEM (Fits: 2012 GMC Sierra 3500 HD)
Brand New: General Motors$49.95$7.95 shipping208 soldGlow Plugs For GMC Sierra 2500 HD 6.6L 2006 2007 2008 2009 2010 12639701 (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ECCPP$15.49or Best OfferFree shipping30 sold8 Pack REAL IRIDIUM Spark Plugs LS1 LS2 LS3 LS6 L99 41-110 12621258 5.3 6.0 6.2L (Fits: 2012 GMC Sierra 3500 HD)
Brand New$17.99Free shipping8PCS Genuine 12639701 Glow Plugs For LMM LML LBZ Silverado Sierra Duramax 6.6L (Fits: 2012 GMC Sierra 3500 HD)
GENUINE / FAST SHIPPING WITHIN 1-2 DAYSBrand New: ACDelco$72.99Free shipping36 soldIgnition Switch Assembly with 2 Keys for Chevy Impala Tahoe Express Silverado (Fits: 2012 GMC Sierra 3500 HD)
Brand New$55.79or Best OfferKnock Sensor Delphi For 2007-2019 GMC Sierra 3500 HD 6.0L V8 2008 2009 2010 2011 (Fits: 2012 GMC Sierra 3500 HD)
Brand New: Delphi$24.92Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
Free shipping8PCS Round OEM Ignition Coil for Cadillac GMC Sierra Envoy Chevy Silverado UF414 (Fits: 2012 GMC Sierra 3500 HD)
Brand New$74.44Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
or Best OfferFree shipping8 sets Performance KIT 41-962 Spark Plugs Ignition Coils Wire Set For Chevy (Fits: 2012 GMC Sierra 3500 HD)
Brand New: Unbranded$105.3515 watching8 OEM Genuine 12639701 Glow Plugs For LMM LML LBZ Silverado Sierra Duramax 6.6L (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco$75.99or Best OfferFree shipping26 sold8 Pcs Glow Plug 12639701 For Silverado Sierra Duramax 6.6L GM LMM LML LBZ Diesel (Fits: 2012 GMC Sierra 3500 HD)
Brand New$20.97or Best OfferFree shippingSet(8) Ignition Coils For Buick LaCrosse Chevy Silverado Impala GMC Sierra UF414 (Fits: 2012 GMC Sierra 3500 HD)
Brand New$69.95Free shipping8x Ignition Coils For Chevy Silverado GMC Sierra 1500 2500 3500 C1512 UF414 (Fits: 2012 GMC Sierra 3500 HD)
Brand New$69.90or Best OfferFree shippingOnly 2 leftCarbon Fiber Shark Fin Antenna Cover Antenna Radio FM/AM Signal Booster Aerial (Fits: 2012 GMC Sierra 3500 HD)
Brand New$10.79Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
Was: $11.99or Best OfferFree shipping8Pack Ignition Coil W/ Wires For Chevy Silverado 1500 Tahoe GMC Sierra 2007-2016 (Fits: 2012 GMC Sierra 3500 HD)
Brand New: CARBOLE$166.99Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
or Best Offer8 Set Genuine OEM UF413 Ignition Coil + OEM 41-110 Spark Plug + OEM 9748UU Wire (Fits: 2012 GMC Sierra 3500 HD)
Brand New: OE+$169.99or Best OfferFree shippingFit For Silverado 1500 Tahoe GMC Square Ignition Coil & Spark Plug & Wires 8PCS (Fits: 2012 GMC Sierra 3500 HD)
Brand New$87.44Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
Was: $93.02or Best OfferFree shippingIgnition Coil For GMC Yukon XL 1500 5.3L 6.2L 2007-2014 GMC Envoy 5.3L 2009 (Fits: 2012 GMC Sierra 3500 HD)
Brand New$15.99or Best OfferFree shipping🔥ACDelco Tune Up Kit For Chevrolet GMC Tahoe Silverado Sierra 2500 3500HD🔥 (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco$159.95Free shipping2011-2012 SILVERADO SIERRA DURAMAX DIESEL GLOW PLUG CONTROLLER NEW GM # 12652113 (Fits: 2012 GMC Sierra 3500 HD)
Genuine OE Factory Original ItemBrand New: GM$289.95Free shippingNew ListingFor GMC Sierra 2500/3500 HD 2007-2014 Plug Retainer Plastic 20983936, 25793816 (Fits: 2012 GMC Sierra 3500 HD)
✔Fast Shipping ✔Perfect Fitment ✔Hassle Free ReturnsBrand New: Dorman$21.94Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
Was: $33.34Free shippingIgnition Switch Dorman For 2007-2016 GMC Sierra 3500 HD 2008 2009 2010 2011 2012 (Fits: 2012 GMC Sierra 3500 HD)
Brand New: Dorman$31.90Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
Free shipping8 Pack Ignition Coil & Wires for 2007-2016 Chevy Silverado 1500 Tahoe GMC Sierra (Fits: 2012 GMC Sierra 3500 HD)
Brand New: CARBOLE$166.99Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
or Best Offer(8)Ignition Coil UF413 C1511 For 2007-2016 Chevy Silverado 1500 Tahoe GMC Sierra (Fits: 2012 GMC Sierra 3500 HD)
Brand New$131.59Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
or Best OfferOEM 8P 12639701 ACDELCO Glow Plug For LMM LML LBZ Silverado Sierra Duramax 6.6L (Fits: 2012 GMC Sierra 3500 HD)
Brand New$44.99or Best OfferFree shippingNew 8PCS 12639701 Glow Plug Fit For LMM LML LBZ Silverado Sierra Duramax 6.6L (Fits: 2012 GMC Sierra 3500 HD)
Brand New$44.59or Best OfferFree shippingDragon Fire Performance Iridium Spark Plug For 1999-14 Chevy GM 41-962 41-110 (Fits: 2012 GMC Sierra 3500 HD)
MEETS & EXCEEDS OE SPECIFICATIONS - DIRECT FACTORY FITBrand New: AIP Electronics$49.958PCS 12639701 Diesel Glow Plug For LMM LML LBZ Silverado Sierra Duramax 6.6L (Fits: 2012 GMC Sierra 3500 HD)
Brand New: ACDelco$68.00or Best OfferFree shipping79 sold8X Round Ignition Coils For Chevy Silverado Impala Tahoe GMC Sierra Savana UF414 (Fits: 2012 GMC Sierra 3500 HD)
Brand New$70.99Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
Was: $122.40or Best OfferFree shippingIgnition Switch Lock Cylinder & 2 Keys for Buick LaCrosse Lucerne Century (Fits: 2012 GMC Sierra 3500 HD)
Brand New$55.49or Best OfferFree shipping8X Glow Plug For 2006-2016 LMM LML LBZ Silverado Sierra Duramax 6.6L 12639701 (Fits: 2012 GMC Sierra 3500 HD)
Brand New: Unbranded$19.00or Best OfferFree shippingSpark Plug Wire Set 8 Wires For Buick Cadillac Chevrolet GMC Hummer Pontiac Saab (Fits: 2012 GMC Sierra 3500 HD)
Brand New$19.15Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
or Best OfferFree shipping8PCS Square Ignition Coil & Spark Plug &Wires For Chevy Silverado 1500 Tahoe GMC (Fits: 2012 GMC Sierra 3500 HD)
Brand New: Unbranded$111.42Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
Was: $123.80or Best OfferFree shipping8 Round For 08 09 10-2019 GMC Sierra 3500 HD V8 6.0L Ignition Coil & Spark Plug (Fits: 2012 GMC Sierra 3500 HD)
Brand New$94.99Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
Was: $189.98or Best OfferFree shipping