Looking for aftermarket parts to modify or upgrade your 2004 Buick Rainier with rocker arms? At Tunersports.com we carry a huge selection of the top name brand performance rocker arm parts and accessories.

IN STOCK - LOW 13702-KITUpgrades stock LS Series Rocker arms with captured Roller trunnions for modified applications. NASCAR spec LS engine proven to increases stability and stiffness.... COMP Cams Trunnion Kit LS-Type Rocker Retrofit 2004-2005 Buick Rainier CXL Plus 2004-2007 Buick Rainier CXL $210.91 |
IN STOCK - DROPSHIPS 13702TL-KITThe COMP Cams GM LS OEM Rocker Arm Upgrade Kit and Installation Tool is designed to be a simple, do-it-yourself upgrade to the LS valve train. The kit utilizes captured Roller bearings and billet trunnions that perform well in high-RPM Race Applications and prevent engine damage from Roller bearing ... COMP Cams GM LS OEM Rocker Arm Upgrade Kit & Installation Tool 2004-2005 Buick Rainier CXL Plus 2004-2007 Buick Rainier CXL $245.08 |
IN STOCK - DROPSHIPS 1675-16New LS-Specific Ultra Pro Magnumâ„¢ Rocker Arms From COMP Cams Increase Ratio And Stiffness Over Stock Rockers, While Also Increasing Lift without The Need To Swap Cams. As LS engines continue to grow in popularity, COMP Cams has expanded its line of Rocker arms to build components specific to L... COMP Cams Rocker Arms GM LS1 1.8 3/8 Ultra 2004-2005 Buick Rainier CXL Plus 2004-2007 Buick Rainier CXL $595.95 |
OUT OF STOCK 16755-KITFor LS1/LS2/LS6/4.8L, 5.3L, and Pre '07 6.0L Truck Engines and Other Cathedral-Port Head Equipped LS Applications. Includes Full Set of (16) Stud-Mount Rockers (with Poly Locks), 3/8" Studs and Raised Guide Plates for 5/16" Pushrods. Increase Strength Over Stock, While Increasing Lift without Swappi... COMP Cams Rocker Arm KitLS1 1.8 5/16 2004-2005 Buick Rainier CXL Plus 2004-2007 Buick Rainier CXL $794.24 |
IN STOCK - DROPSHIPS 1677-16New LS-Specific Ultra Pro Magnumâ„¢ Rocker Arms From COMP Cams Increase Ratio And Stiffness Over Stock Rockers, While Also Increasing Lift without The Need To Swap Cams. As LS engines continue to grow in popularity, COMP Cams has expanded its line of Rocker arms to build components specific to L... COMP Cams Rocker Arms GM LS1LS2LS6 1.8 2004-2005 Buick Rainier CXL Plus 2004-2007 Buick Rainier CXL $555.50 |
IN STOCK - DROPSHIPS 19024-16The Comp Cams Ultra ARC Aluminum Series Rocker Arms increase engine power, improve valvetrain stability, and enhance oiling efficiency. Their extruded design—developed using FEA analysis—creates a stronger, stiffer rocker body without adding unnecessary weight. The ARC series rocker arms feature... COMP Cams Rocker Arm Ultra Gold Arc LS1 2004-2005 Buick Rainier CXL Plus 2004-2007 Buick Rainier CXL $604.40 |
IN STOCK - DROPSHIPS 19025-16The Comp Cams Ultra ARC Aluminum Series Rocker Arms increase engine power, improve valvetrain stability, and enhance oiling efficiency. Their extruded design—developed using FEA analysis—creates a stronger, stiffer rocker body without adding unnecessary weight. The ARC series rocker arms feature... COMP Cams Rocker Arm Ultra Gold Arc LS1 2004-2005 Buick Rainier CXL Plus 2004-2007 Buick Rainier CXL $605.36 |
IN STOCK - DROPSHIPS 1981-16COMP Cams is proud to announce another industry first: a bolt-in-ready Bushed Shaft Rocker System for GM LS engines. Thanks to innovative engineering, this patent pending Bushed Shaft Rocker System increases valve train stability and durability while decreasing deflection and providing bolt-in conve... COMP Cams Max-Lift BSR Shaft Rocker Kit Chevy LS1 2004-2005 Buick Rainier CXL Plus 2004-2007 Buick Rainier CXL $813.95 |
IN STOCK - DROPSHIPS 4663-8Replacement Pedestals for 19024 and 19025 GM LS1/LS2/LS6 Non-Adjustable Rocker. The Comp Cams Ultra ARC Aluminum Series Rocker Arms increase engine power, improve valvetrain stability, and enhance oiling efficiency. Their extruded design—developed using FEA analysis—creates a stronger, stiffer r... COMP Cams Rocker Arm Pedestal Ultra GOL 2004-2005 Buick Rainier CXL Plus 2004-2007 Buick Rainier CXL $92.66 |

IN STOCK - DROPSHIPS 1477-16Stock LS Rocker arms can experience cageless needle bearing failure when loads are increased. COMP Cams engineers have solved this problem with upgraded Rockers featuring a stronger and more durable trunnion and captured bearing design. These upgraded Rockers increase lift capacity and utilize caged... COMP Cams GM LS1 Upgraded OEM Rocker Arms - Set of 16 2004-2005 Buick Rainier CXL Plus 2004-2007 Buick Rainier CXL $599.39 |
IN STOCK - DROPSHIPS 4554-16COMP Cams takes pride in having the finest Rocker arm Studs available on the market. The High Energyâ„¢ and Magnum Series Studs work well in Applications with moderate lifts and spring pressures and are available in the popular 3/8" and 7/16" sizes. When ultimate strength is required as with hig... COMP Cams Studs GM LS1 3/8 Rocker 2004-2005 Buick Rainier CXL Plus 2004-2007 Buick Rainier CXL $132.59 |

IN STOCK - DROPSHIPS 137021COMP Cams Rocker Arm Trunnion LS-Type Re 2004-2005 Buick Rainier CXL Plus 2004-2007 Buick Rainier CXL $35.65 |
IN STOCK - DROPSHIPS 137022COMP Cams Rocker Arm Bearing LS-Type Re 2004-2005 Buick Rainier CXL Plus 2004-2007 Buick Rainier CXL $29.89 |
IN STOCK - DROPSHIPS 1675-1For LS1/LS2/LS6/4.8L, 5.3L, and Pre '07 6.0L Truck Engines - Cathedral Port Head LS ApplicationsSingle Stud Mount Rocker - Includes Poly Lock - Requires 3/8" Studs & ... COMP Cams Rocker Arm GM LS1 1.8 3/8 Ultra 2004-2005 Buick Rainier CXL Plus 2004-2007 Buick Rainier CXL $74.17 |
IN STOCK - DROPSHIPS 1677-1New LS-Specific Ultra Pro Magnumâ„¢ Rocker Arms From COMP Cams Increase Ratio And Stiffness Over Stock Rockers, While Also Increasing Lift without The Need To Swap Cams. As LS engines continue to grow in popularity, COMP Cams has expanded its line of Rocker arms to build components specific to L... COMP Cams Rocker Arm GM LS1LS2LS6 1.8 2004-2005 Buick Rainier CXL Plus 2004-2007 Buick Rainier CXL $59.48 |
IN STOCK - DROPSHIPS 19024-1The Comp Cams Ultra ARC Aluminum Series Rocker Arms increase engine power, improve valvetrain stability, and enhance oiling efficiency. Their extruded design—developed using FEA analysis—creates a stronger, stiffer rocker body without adding unnecessary weight. The ARC series rocker arms feature... COMP Cams Rocker Arm Ultra Gold Arc LS1 2004-2005 Buick Rainier CXL Plus 2004-2007 Buick Rainier CXL $62.37 |
IN STOCK - DROPSHIPS 19025-1The Comp Cams Ultra ARC Aluminum Series Rocker Arms increase engine power, improve valvetrain stability, and enhance oiling efficiency. Their extruded design—developed using FEA analysis—creates a stronger, stiffer rocker body without adding unnecessary weight. The ARC series rocker arms feature... COMP Cams Rocker Arm Ultra Gold Arc LS1 2004-2005 Buick Rainier CXL Plus 2004-2007 Buick Rainier CXL $62.37 |
IN STOCK - DROPSHIPS 4554-1GM LS1 3/8 Rocker Stud... COMP Cams Stud GM LS1 3/8 Rocker 2004-2005 Buick Rainier CXL Plus 2004-2007 Buick Rainier CXL $37.06 |
IN STOCK - DROPSHIPS 4663-1Replacement Pedestal for 19024 and 19025 GM LS1/LS2/LS6 Non-Adjustable Rocker. The Comp Cams Ultra ARC Aluminum Series Rocker Arms increase engine power, improve valvetrain stability, and enhance oiling efficiency. Their extruded design—developed using FEA analysis—creates a stronger, stiffer ro... COMP Cams Rocker Arm Pedestal Ultra GOL 2004-2005 Buick Rainier CXL Plus 2004-2007 Buick Rainier CXL $35.97 |

IN STOCK - DROPSHIPS 1500CPGCOMP Cams Shaft Rocker Set Std GM LS1 1 2004-2005 Buick Rainier CXL Plus 2004-2007 Buick Rainier CXL $1,792.10 |
IN STOCK - DROPSHIPS 1501CPGCOMP Cams Shaft Rocker Set Std GM LS1 1 2004-2005 Buick Rainier CXL Plus 2004-2007 Buick Rainier CXL $1,792.84 |

OUT OF STOCK 13706-KITperfect choice for rule packages that do not allow Stud girdles
Features all parts and pieces needed to switch over to the new Studs while freshening and rebuilding the Rockers
Kit can also be used to retro-fit old Pro Magnumâ„¢ or Hi-Tech Stainless Steel Rockersâ„¢
... COMP Cams Trunnion Kit1/2inUpm Type Rocker 2004-2005 Buick Rainier CXL Plus 2004-2007 Buick Rainier CXL $587.69 |