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Dorman Holstein Sparta by Delphi Car Engine Parts Online

From air filters to fuel delivery, online engine parts are essential for automotive repairs, maintenance, and even performance upgrades. Whether you’re an experienced mechanic or automotive enthusiast working on your daily driver or restoring a classic, Sixity Auto has you covered. Dive into our catalog below to find the car engine parts you need to keep your vehicle running smoothly.

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  1. Dorman Engine Timing Belt Tensioner Spring
    Dorman 917-025 Timing Belt Tensioner Spring
    Special Price $5.57 Regular Price $7.99
    Dorman
    Out of stock
  2. Dorman Engine Timing Belt Tensioner Spring
    Dorman Timing Belt Tensioner Spring for 1999-2003 Mazda Protege 1.8L 2.0L L4
    Special Price $12.92 Regular Price $17.99
    Dorman
    Out of stock
  3. Dorman Engine Timing Belt Tensioner Spring
    Dorman Timing Belt Tensioner Spring for 1993-2002 Mazda 626 2.0L L4
    Special Price $12.92 Regular Price $17.99
    Dorman
    Out of stock
  4. Dorman Engine Timing Belt Tensioner Spring
    Dorman Timing Belt Tensioner Spring for 1999-2003 Mazda Protege 1.8L 2.0L L4
    Special Price $12.92 Regular Price $17.99
    Dorman
    Out of stock
  5. Dorman Engine Timing Belt Tensioner Spring
    Dorman Timing Belt Tensioner Spring for 2002-2003 Mazda Protege5 2.0L L4
    Special Price $13.19 Regular Price $18.99
    Dorman
    Out of stock
  6. Dorman Engine Timing Belt Tensioner Spring
    Dorman Timing Belt Tensioner Spring for 2002-2003 Mazda Protege5 2.0L L4
    Special Price $13.19 Regular Price $18.99
    Dorman
    Out of stock
  7. Dorman Engine Timing Belt Tensioner Spring
    Dorman Timing Belt Tensioner Spring for 1993-1997 Mazda MX-6 2.0L L4
    Special Price $13.19 Regular Price $18.99
    Dorman
    Out of stock
  8. Dorman Engine Timing Belt Tensioner Spring
    Dorman Timing Belt Tensioner Spring for 1993-1997 Mazda MX-6 2.0L L4
    Special Price $13.19 Regular Price $18.99
    Dorman
    Out of stock
  9. Dorman Engine Timing Belt Tensioner Spring
    Dorman Timing Belt Tensioner Spring for 1993-2002 Mazda 626 2.0L L4
    Special Price $13.19 Regular Price $18.99
    Dorman
    Out of stock
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High-Quality Engine Parts for Your Motor Vehicle

Sixity Auto works with top brands to build our inventory of OEM-quality engine parts online, ensuring you have access to reliable and cost-effective components. We promise that every part fits as advertised and meets or exceeds expectations. 

We want to make sure that whether you’re performing routine maintenance or making a major repair, you can find the best parts at a fair price. Our focus is always on delivering affordable solutions without compromising the strict tolerances for your vehicle’s longevity. 

Fast, Reliable Shipping

We know that when you order car engine parts, you need them right away. Our network of US warehouses enables us to offer fast, dependable shipping across the US, with 99% of orders shipping within one business day. Many of the items in our catalog also come with free shipping. 

A Reputation You Can Count On

Sixity Auto has been in business for over 20 years and has shipped over 10 million engine parts from our online storefront. Our customers praise our products and timely delivery. If you have any questions about us or our inventory, contact our US-based customer service department. We’re happy to be of service.

Frequently Asked Questions

How fast will your engine parts arrive?

Timing is a top priority. We use our extensive network of warehouses to ensure speedy delivery, with most orders shipping within one business day. That said, the exact delivery time will depend on the parts ordered, your location, and the delivery options selected during checkout.

Are the parts on Sixity Auto comparable to what I’d find in a store?

Absolutely! We stock only top-quality OEM-replacement auto parts that meet or exceed original equipment specifications. The crucial difference between Sixity Auto and the other guys is price. We offer these high-quality parts at prices typically lower than those at your local auto parts store.

Do you offer any discounts for the engine parts sold online?

Yes. We’re proud to offer a 10% discount on everything for military personnel. 

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  1. Part Type
    Engine Timing Belt Tensioner Spring
  2. Brand
    Dorman
  3. Brand
    Holstein
  4. Brand
    Sparta
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Part Type
  1. Air Filter Housing 11items
  2. Catalytic Converter 6items
  3. Catalytic Converter with Integrated Exhaust Manifold 31items
  4. Diesel Exhaust Fluid (DEF) Heater 8items
  5. Diesel Fuel Filter Bleeder Screw 11items
  6. Diesel Fuel Heating Element 21items
  7. Diesel Fuel Injector Driver Module 10items
  8. Diesel Fuel Injector Driver Module Resistor 71items
  9. Diesel Fuel Injector Pump Driver Relocation Kit 71items
  10. Diesel Particulate Filter (DPF) Gasket 2items
  11. Diesel Particulate Filter Gasket 1item
  12. Distributor Housing Seal Kit 17items
  13. EGR Cooler 55items
  14. EGR Line 30items
  15. EGR System Service Kit 4items
  16. EGR Vacuum Modulator 21items
  17. EGR Valve 110items
  18. EGR Valve Control Solenoid 13items
  19. Engine Air Intake Coupling 11items
  20. Engine Air Intake Hose 136items
  21. Engine Camshaft Synchronizer 18items
  22. Engine Crankcase Breather Element 16items
  23. Engine Cylinder Deactivation Solenoid 119items
  24. Engine Harmonic Balancer 815items
  25. Engine Harmonic Balancer Bolt 145items
  26. Engine Harmonic Balancer Pulley 104items
  27. Engine Intake Manifold 225items
  28. Engine Intake Manifold Actuator 9items
  29. Engine Intake Manifold Adjuster Repair Kit 33items
  30. Engine Intake Manifold and Valve Cover Kit 6items
  31. Engine Intake Manifold Gasket Set 172items
  32. Engine Intake Manifold Runner Control Valve 115items
  33. Engine Intake Manifold Runner Solenoid 2items
  34. Engine Oil Drainback Valve 6items
  35. Engine Oil Filler Tube 127items
  36. Engine Oil Filter Adapter Gasket 31items
  37. Engine Oil Filter Bypass Valve 27items
  38. Engine Oil Filter Cover 340items
  39. Engine Oil Filter Housing Cover Drain Plug 26items
  40. Engine Oil Filter Housing Return Tube 6items
  41. Engine Oil Pan 1153items
  42. Engine Oil Pressure Sensor Filter 51items
  43. Engine Oil Pump Flow Control Valve 15items
  44. Engine Oil Separator Cover 17items
  45. Engine Rear Main Seal Cover 146items
  46. Engine Timing Belt Tensioner 32items
  47. Engine Timing Belt Tensioner Spring 9items
  48. Engine Timing Chain Guide Bolt 34items
  49. Engine Timing Chain Tensioner 24items
  50. Engine Timing Cover 342items
  51. Engine Valve Cover 235items
  52. Engine Valve Cover Gasket 29items
  53. Engine Variable Timing Oil Control Valve 3items
  54. Engine Variable Timing Solenoid 459items
  55. Engine Variable Timing Solenoid Filter 1item
  56. Engine Variable Timing Solenoid Gasket 3items
  57. Engine Variable Timing Sprocket 62items
  58. Engine Variable Valve Timing (VVT) Oil Control Valve 132items
  59. Engine Variable Valve Timing (VVT) Solenoid 453items
  60. Engine Variable Valve Timing (VVT) Solenoid Filter 77items
  61. Engine Variable Valve Timing (VVT) Solenoid Gasket 30items
  62. Engine Variable Valve Timing (VVT) Sprocket 185items
  63. Evaporative Emissions System Detection Pump Filter 1item
  64. Evaporative Emissions System Leak Detection Pump 353items
  65. Evaporative Emissions System Leak Detection Pump Filter 38items
  66. Exhaust Clamp 18items
  67. Exhaust Heat Shield 8items
  68. Exhaust Manifold 478items
  69. Exhaust Manifold to Cylinder Head Repair Clamp 208items
  70. Exhaust Manifold with Integrated Catalytic Converter 6items
  71. Fuel Cooler 26items
  72. Fuel Filler Door Lock Actuator 9items
  73. Fuel Filler Neck 68items
  74. Fuel Filler Neck Seal 110items
  75. Fuel Filter Cap 39items
  76. Fuel Filter Housing 11items
  77. Fuel Filter Primer Housing Seal Kit 22items
  78. Fuel Injection Fuel Feed Pipe 6items
  79. Fuel Injection Pressure Regulator 32items
  80. Fuel Injection Throttle Body 183items
  81. Fuel Injector O-Ring Kit 44items
  82. Fuel Injector Sleeve 16items
  83. Fuel Line 84items
  84. Fuel Line Clip 204items
  85. Fuel Line Connector 532items
  86. Fuel Pump Driver Module 71items
  87. Fuel Pump Module Assembly 52items
  88. Fuel Pump Strainer 20items
  89. Fuel Pump Tank Seal 206items
  90. Fuel Tank 44items
  91. Fuel Tank Filler Neck 9items
  92. Fuel Tank Lock Ring 106items
  93. Fuel Tank Roll Over Valve 9items
  94. Fuel Tank Sending Unit 20items
  95. Fuel Tank Sending Unit Lock Ring 40items
  96. Fuel Tank Strap 90items
  97. Fuel Water Separator Drain Valve 12items
  98. Fuel Water Separator Valve 1item
  99. High Pressure Oil Rail Repair Kit 11items
  100. Hydrocarbon Injector 9items
  101. Ignition Lock Cylinder 534items
  102. Ignition Lock Housing 48items
  103. Ignition Pulsator Ring 28items
  104. Ignition Switch Actuator Pin 36items
  105. PCV Valve Diaphragm 98items
  106. PCV Valve Tubing 19items
  107. Secondary Air Injection Check Valve 72items
  108. Secondary Air Injection Pump 178items
  109. Secondary Air Injection Pump Pulley 102items
  110. Throttle Body Motor 42items
  111. Turbocharger 6items
  112. Turbocharger Boost Solenoid 27items
  113. Turbocharger Coolant Line 8items
  114. Turbocharger Diverter Valve 76items
  115. Turbocharger Intercooler Hose 10items
  116. Turbocharger Mounting Kit 11items
  117. Turbocharger Oil Line 26items
  118. Turbocharger Oil Return Tube 1item
  119. Turbocharger Up Pipe 6items
  120. Turbocharger Up Pipe Kit 16items
  121. Turbocharger Vane Position Solenoid 30items
  122. Turbocharger Wastegate Solenoid 57items
  123. Vacuum Pump 82items
  124. Vacuum Pump Repair Kit 5items
  125. Vacuum Switching Valve 115items
  126. Vapor Canister 255items
  127. Vapor Canister Purge Valve 1243items
  128. Vapor Canister Shut-Off Valve 71items
  129. Vapor Canister Vent Solenoid 963items
  130. Vapor Canister Vent Valve 7items
Price
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Stock
  1. Out of Stock 9items
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100% fitment guarantee at sixityauto.com

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Shop with confidence, knowing that your purchase from Sixity Auto will fit your vehicle. If after purchase you determine that your part does not fit the vehicle we advertised, simply contact us to initiate a return. We want your parts to fit!

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We speak your language. Our staff has decades of experience selling auto parts to enthusiasts like you. Whether it's for your car, truck, or van, we have staff on hand that can answer your questions and make sure you get the part you're looking for.

For phone sales or help with product fitment questions, our U.S.-based customer service staff in California and Indiana is available weekdays, 8am-8pm ET.

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Sixity Auto works with a wide range of business customers—from repair shops and dealerships to fleet operators, government organizations, and others that purchase parts for resale or operational use.

If you are a qualified tax-exempt or resale customer, submit your documentation and we'll set you up for tax-free shopping. Check out all the details here.

military members and vets save 10% every day

MILITARY DISCOUNT
Save 10% on every purchase

Sixity Auto is proud to support our Active-Duty Service Members, Vets, and their immediate families. To show a token of our thanks, we extend a 10% discount on your entire purchase, every single day.

We use VerifyPass (formerly ID Discount) to help us manage our Military Discount program. Click here for all the details!

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© 2026 Sixity, Inc. Part of Proximity Group, an American-owned and operated online retailer. All Rights Reserved.