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DeatschWerks Fuel Injectors Top Feed 850cc (Part Number: )
DeatschWerks Fuel Injectors Top Feed 850cc (Part Number: )
DeatschWerks Fuel Injectors Top Feed 850cc (Part Number: )
DeatschWerks Fuel Injectors Top Feed 850cc (Part Number: )
DeatschWerks Fuel Injectors Top Feed 850cc
Subaru Models (inc. 2002-2014 WRX / 2007+ STI)
Read 6 Reviews | 15 Q&As
Part # 21S-01-0850-4
$504.61
msrp: $549.00

Only 3 left!

Features & Product Details

RallySport Direct is proud to carry the DeatschWerks Top Feed 850cc Fuel Injectors to help you supplement your engine with a proper amount of fuel to accommodate current and future modifications. 

Here are the details:

  • High impedance coils for compatibility with the OEM injector driver
  • Ethanol and methanol compatible
  • Each set is flow matched to within 1-2%
  • DeatschWerks includes a flow report
  • Built using OEM cores, or are brand new units that are a result of a 40 point data inspection before shipment
  • Sold as a set of 4 injectors that are ready for the installation
  • Specifications

    Brand: DeatschWerks
    Injector Size: 850cc
    Injector Type: Top Feed
    O-Rings Included: Yes
    Plug and Play: Yes
    QTY: 4
    Rails Included: No
    Mfgr. Warranty: 3 Years
    Condition: New Product
    Return Policy:

    RallySport Guarantee - 30 Days


    Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

    RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

    The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.
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    REVIEWS & CUSTOMER MEDIA

    6 Reviews
    4.8 out of 5 Stars
    5 Stars
    (5)
    4 Stars
    (1)
    3 Stars
    (0)
    2 Stars
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    1 Stars
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    Customer Photos and Videos
    No user media. You can upload a photo or video of your install by posting a review.
    They work good! 2 years ago
    earache96
    I've had these as well as a 320lph fuel pump on my 05 wrx for 7 months and the work fine, no random fuel leaks or issues
      
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    0 of 1 people found the following review helpful
    great stuff 5 years ago
    putter380
    Huge pain to install but awesome performance increase with tune. great injectors
      
    Was this review helpful?
    great stuff 5 years ago
    putter380
    Huge pain to install but awesome performance increase with tune. great injectors
      
    Was this review helpful?
    1 of 1 people found the following review helpful
    Deatschwerks 850cc Injectors 6 years ago
    guest55c52785caae52f5098b6bb7
    Over a year now, and these injectors are still performing very well. Thanks to the techs hear at RallySportDirect.com, whom helped me pick out the correct size for my upgrade build, things are just fine. Very knowledgable staff. Thank You!
      
    Was this review helpful?
    3 of 3 people found the following review helpful
    E85 Awesomsauce 7 years ago
    bridgerhenriksen
    I installed these at the same time with my DW 65c pump. I have an 08' STi and have tuned on a dynojet dyno at 344whp and 418wtq on stock VF48 turbo. The highest I've seen my Injector duty cycles go is 86% for reference... Been about a month so far and they are doing great!
      
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    QUESTIONS & ANSWERS

    • Q: Any other parts needed to install on 2012 STI?  WRC fan1 month ago

      Will be installing a Blouch 20g after finishing fuel system upgrades and tuning. Do these injectors require any other parts in order to be installed? Want to confirm that they work with the OEM injector connectors and fuel rails.
      • 1 of 1 people found the following answer helpful

        A:  These injectors are plug and play with proper tuning and they are compatible with OEM and most aftermarket rails.

        Jared A. @ RallySport Direct 1 month ago  
          
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    • Q: Injectors for a 18g  Nelson Asay11 months ago

      Hi! Will these injectors be able to handle a 18g turbo? If not or maybe, what would be a better injector option? Thanks!
      • 0 of 0 people found the following answer helpful

        A:  Great question! Yes these would be able to handle the 18g turbo just fine. It's when you start getting into built motor, E85, bigger turbo than the 18g where you will see these guys be not enough.

        Megan L. @ RallySport Direct 11 months ago  
          
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    • Q: injector swap  aggie1132 years ago

      If my car currently has DW 850cc injectors would I need a retune to just swap them out?
      • 0 of 0 people found the following answer helpful

        A:  If the car is tuned for the 850CC DW then you should be fine to swap them out.

        Jared A. @ RallySport Direct 2 years ago  
          
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      • 0 of 0 people found the following answer helpful

        A:  I would recommend at least having the tune checked. While the general injector characteristics should be the same, the injectors likely will not be balanced around the same flow rate. Is it enough to cause an issue, unlikely. ...but if your original set was balanced on the high or low end of the range and the new set is on the opposite, it can cause a lean or rich condition.

        [email protected] @ DeatschWerks 2 years ago  
          
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    • Q: Turbo  Cruz3 years ago

      Do I have to retune I have right know the td05h 16 g with 565 injectors But I wanna put a td05h 18 g what injectors to use? Will I gan more hp after ?
      • 0 of 0 people found the following answer helpful

        A:  Injectors will require a new tune. The 18g is a larger turbocharger and will net you more power over the 16g.

        Nick S. @ RallySport Direct 3 years ago  
          
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    • Q: 850cc  Cruz3 years ago

      Hi there I have a td05h 16g turbo with 255 walbro and 565 injectors down pipe up pipe delete sensor Cobb intake electronic boost control full exhaust done custom and after the tune I'm making 296 hp at 18 psi I'm looking to get the td05h 18g Do I need to change anything in mine set up and will I gan more hp ?
      • 0 of 0 people found the following answer helpful

        A:  Are you wondering if these Injectors will be suitable for your setup? Or is the a questions for the parts you already have? Give us a call so we can further assist and get you what you need.

        Trevor C. @ RallySport Direct 3 years ago  
          
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